- What Is LHA ? Lipohydroxy Acid – Anti Acne Ingredient | La Roche-Posay® Australia & New Zealand
- The Differences between Glycolic Acid, Salicylic Acid, Lipohydroxy Acid, and Gluconolactone
- Glycolic Acid
- Salicylic Acid
- Lipohydroxy Acid
- This is everything a dermatologist wants you to know about lipohydroxy acid
- What is lipohodroxy acid?
- What are the skin care benefits of using lipohydroxy acid?
- Anything else?
- What skin types is lipohydroxy acid best suited for
- Any words of caution?
- 1La Roche-Posay Effaclar DUO Acne Spot Treatment
- 2Garnier SkinActive Clearly Brighter Dark Spot Corrector
- 3IT Cosmetics Confidence In A Cream Rosy Tone
- 3 SkinCeuticals LHA Cleanser Gel
- AHA vs BHA: Acids Explained
- What is AHA?
- Glycolic Acid
- Lactic Acid
- Malic Acid
- Tartaric Acid
- Mandelic Acid
- Citric Acid
- What is BHA?
- Salicylic Acid
- Lipohydroxy Acid (LHA)
- Citric Acid & Malic Acid
- Other Differences Between AHA vs BHA
- Which Acids Should You Choose – AHA vs BHA vs Both?
- The Bottom Line
- What are Lipo Hydroxy Acids (LHA) and what can they do for your skin? — Scrollhype
- So what are LHAs?
- Products we love
What Is LHA ? Lipohydroxy Acid – Anti Acne Ingredient | La Roche-Posay® Australia & New Zealand
All skin types benefit from regular exfoliation to stimulate cellular turnover, and it’s particularly important for those with acne & pimples. What is the best course of exfoliating action for promoting clearer, pimple-free skin?
All skin types benefit from regular exfoliation to stimulate cellular turnover, and it’s particularly important for those prone to congestion.
However, using a harsh physical exfoliant can simply exacerbate acne, spreading bacteria and irritating an already compromised complexion.
Furthermore, physical exfoliators, or scrubs, address only the surface of the skin, without penetrating deep into the pore to target the root cause of acne.
So, what IS the best course of exfoliating action for promoting clearer, pimple-free skin?
Chemical exfoliation is undoubtedly the smarter option for acne-prone skin; however, it’s important to err on the side of caution. Aggressive treatment of acne with harsh, stripping ingredients can be counterproductive, causing an unwanted rebound effect. This means the skin may in fact respond by producing more oil, leading to further breakouts.
Therefore, the clear answer to exfoliating with acne lies in using ingredients that are gentle, without compromising on effectiveness. LHA is one such ingredient.
While Alpha-hydroxy and beta-hydroxy acids (AHAs and BHAs) are well known acne-fighters, you might not have heard of LHA. A derivative of salicylic acid, the major benefit of beta-lipohydroxy acid (LHA), lies in its gentle, non-irritating mode of exfoliation.
Meaning it’s tough on acne, gentle on sensitive skin.LHA’s keratolytic (exfoliating) action lifts dead skin cells from the surface of the skin for a smoother complexion.
With a similar pH level to healthy skin, it’s less acidic than many chemical exfoliants, such as benzoyl peroxide, and is well tolerated by even the most sensitive of skin.
While it penetrates less deeply than salicylic acid, LHA is more lipophilic, meaning it is better able to dissolve in fats, oils and lipids, which is ideal for acne-prone skins.
Used together, as in La Roche-Posay’s Effaclar Duo +, LHA and salicylic acid make a powerful and complete exfoliating duo. The chemical exfoliants in Duo + help to both regulate sebum production (oiliness) and reopen clogged pores.
This helps visibly improve existing pimples, while simultaneously reducing future breakouts.
With a light cream-gel texture, Effaclar Duo+ also contains ceramide Procerad to help reduce acne pigmentation, and niacinamide to soothe. Used each morning and/or evening, Effaclar Duo+ effectively fights against acne, whilst respecting sensitive skin.
This article is intended as general information only. You should seek advice from a professional before starting a new regime or course of conduct.
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photos (c) Getty Images / (c) La Roche-Posay / (c) Centre Thermal de La Roche-Posay
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The Differences between Glycolic Acid, Salicylic Acid, Lipohydroxy Acid, and Gluconolactone
Yesterday, in What are Hydroxy Acids?, we differentiated the various types of hydroxy acids (HAs) that one can encounter in the cosmetic and medical industries.
I proceeded to enumerate 10+ examples of compounds that fall under the umbrella definition given for HAs.
Fortunately for the readers, or those of you who are bored by pages of scientific jargon, only a few of the examples have been widely used to treat skin conditions. The FOUR that will be covered today include the following:
- (1x) Alpha Hydroxy Acid (AHA): Glycolic Acid (GA).
- (2x) Salicylic Acid Family (SAF): Salicylic Acid (SA), and Lipohydroxy Acid (LHA).
- (1x) Polyhydroxy Acid (PHA): Gluconolactone (GUL).
As the most well-known and studied HA, you always hear that GA is great for “exfoliating” the skin. But how does it exfoliate the skin? Several studies suggest that GA exfoliates the skin by manipulating the calcium ion concentrations present in the epidermis.
Calcium ions play crucial roles in the adhesion of skin cells, specifically in structures the desmosomes and adheren junctions.
Now, because AHAs GA can chelate metal ions, its presence once applied topically, will result in an overall loss of the epidermal concentration of calcium ions, which in turn will disrupt the adhesion of skin cells, ultimately leading to “forced” exfoliation.
*Note that because GA is extremely hydrophilic, it will tend to stay away from, and therefore not exfoliate areas that are lipid-rich, the lining of hair follicles (pores).
What about GA’s alleged claims of helping with anti-aging and hyperpigmentation? Fortunately, GA is a powerhouse when it comes to these issues as well; it addresses them via multiple pathways.
- In vitro and ex vivo studies indicate that high-strength GA directly accelerates collagen synthesis in fibroblasts by modulating activation.
- Furthermore, GA inhibits matrix degradation by stimulating the production of the cytokine, interleukin-1 alpha (IL-1a). Because IL-1a also plays significant roles in other biological interactions including prostaglandin release (compounds related to inflammatory reactions), that may attribute to GA’s irritation potential, overly aggressive and chronic use of GA is not recommended.
- GA can also increase epidermal thickness, epidermal and dermal levels of hyaluronic acid (the other HA!), and increased type I collagen gene expression measured by the levels of mRNA. The results are positive changes in appearance, texture, and function.
- Finally, GA is known to be effective in treating forms of hyperpigmentation such as melasma and solar lentigos. However, in the past it was just assumed that this mechanism of action was due to accelerated remodeling and exfoliation, which will result in faster pigment dispersion. However, some studies have shown that part of GA’s ability to reduce hyperpigmentation is independent from its acidic characteristic. In fact, GA was shown to directly inhibit the tyrosinase enzyme. While several compounds such as hydroquinone already operate via this mechanism, why not use GA if it has so many other benefits?
Another very well-known HA, SA is known for its ability to treat acne. It does so in a similar fashion as that of GA. However, with the hydroxyl and carboxyl groups attached directly the benzene ring, SA is much more lipophilic than GA. Therefore, it can exfoliate the areas ( in the pores), that GA can’t. However, it does have distinct properties that separate it from GA.
- SA is antibacterial, which has the potential to neutralize any P. Acnes that’s present in acne papules and pustules. SA’s antibacterial nature comes from its ability to inhibit the production of various aspects necessary for binary fission (bacterial reproduction), such as fibrinogen, fibronectin, and alpha-hemolysis.
- SA is also anti-inflammatory, which again is great for treating acne conditions, as any additional inflammation will worsen the breakouts. SA’s anti-inflammatory nature comes from its ability to truncate the arachidonic acid (AA) cascade. This in part, allows SA to suppress the expression of inflammation-inducing genes by the inhibition of transcription activators such as (nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB), activation protein-1 (AP-1), and CCAAT/enhancer-binding protein B (C/EBPB), in case you were curious…
A newcomer and relative to SA, lipohydroxy acid (LHA) is structurally characterized as an SA molecule that has an eight-carbon fatty chain connected to the aromatic benzene ring.
This “attachment” allows for LHA to be more lipophilic than SA, while penetrating less deeply, which may partially account for its lower irritation potential.
Due to this structural modification, LHA appears to modulate trans-membrane glycoproteins and not affect the corneocyte membrane, un SA and others, which allows LHA to induce desquamation of individual desmosomes, resulting in cleaner and more even exfoliation.
With exfoliation covered, what else can this newcomer do? Besides being anti-bacterial and anti-inflammatory its parent molecule SA, LHA’s other important characteristic is that it exhibits similar effects as those of tretinoin, albeit less potent ones. LHA has been shown to stimulate renewal of epidermal cells and of the extracellular matrix.
While a relatively new compound, LHA is an exciting ingredient that I would personally love to see further researched and elucidated. Its low irritation potential (by being less penetrating and the ability to operate at a pH of 5.
5) combined with its (weak) tretinoin- effects, would be a Godsend for those who have very sensitive skin ( people with rosacea) and cannot use, but still desire the benefits of LHA’s more traditional and irritating counterparts.
*Note that most if not all of the studies cited for LHA are done by L’Oreal Corp, or some affiliated party. L’Oreal owns the sole brand that uses LHA, LaRoche Posay. And while the studies are well-designed and the conclusions are logical, this conflict of interest and source of bias cannot be overlooked. Guess we can only wait until more independent research arises.
As stated last week, polyhydroxy acids (PHAs) are AHAs with multiple hydroxyl groups. Even newer than LHA, PHAs represent a new generation (though not necessarily a better one) of HAs because they give similar results as AHAs, without the irritation that usually comes hand-in-hand.
Furthermore, PHAs gluconolactone (GUL) provide additional hydration due to the additional hydroxyl groups, which can attract more water as humectants. GUL has also been shown to work well with other proven ingredients such as tretinoin and hydroquinone.
I also find it exciting that gluconolactone has been shown to be just as effective as benzoyl peroxide (BP) at reducing acne lesions, without the irritation! That’s great because if you can avoid BP, which operates by generating ROS and ages the skin prematurely, you can deal with acne without hurting your skin. Once again, I’m eager to see more well-designed studies done to examine and analyze the currently unknown mechanism of action and any other potential dermatologic applications.
Phew! While that wasn’t very long, it admittedly was quite technical. Stay tuned for Part 3 (misconceptions of HAs), and let me know your opinions in the comments section!
Contributing John Su
This is everything a dermatologist wants you to know about lipohydroxy acid
If you feel you know all there is to know when it comes to using acids in your skin care routine, think again.
Sure, you might be a total pro when it comes to alpha-hydroxy acids (glycolic acid, lactic acid), beta-hydroxy acids (salicylic acids), and maybe even polyhydroxy acid (PHAs), but are you all brushed up on the new kid on the block, lipohydroxy acid? LHA (for short) is a derivative of salicylic acid—making it a BHA—and is very much on our radar lately, for good reason.
The chemical exfoliator is a gentler alternative for those whose skin may not tolerate salicylic acid but still want something that can help treat acne-prone skin. We reached out to David Lortscher, M.D., a dermatologist and founder of custom skincare brand Curology, who filled us in on everything we need to know about lipohydroxy acid.
What is lipohodroxy acid?
Lipohydroxy acid, or LHA, is a beta-hydroxy acid (BHA), explains Dr. Lortscher. “BHAs are oil-soluble and usually refer to salicylic acid,” he says. LHA in particular is a salicylic acid derivative with higher molecular weight and stronger lipophilic properties, which means it’s able to dissolve in lipids/fats.
What are the skin care benefits of using lipohydroxy acid?
“It is thought to have skin-renewing, exfoliating, and acne-treating properties,” says Dr. Lortscher. “Although more studies are needed, preliminary evidence has found lipohydroxy acid to be helpful in the treatment of acne due to its antibacterial, anti-inflammatory, and anti-fungal properties.”
It’s also comedolytic, which means it prevents blemishes from forming when oil becomes trapped in pores. Better yet, it actually targets sebum-rich sebaceous glands, further preventing acne.
“Exfoliation may also enhance the effects of other acne-fighting products by reducing the barrier of dead skin cells, thus allowing for better penetration into the skin,” says Dr. Lortscher.
That means that if you’re using other active ingredients in your routine, incorporating LHA as a first step could help your other products better absorb into the skin, making them more effective and therefore helping you get a better bang for your buck, if you will.
In general, “chemical exfoliants dissolve the ‘cement’ that holds dead skin cells on the skin’s surface, allowing them to be shed more efficiently,” explains Dr. Lortscher. This can address issues dryness, dullness, and flaky skin.
What’s great about lipohydroxy acid is how gently it does this. In a study published by dermatologist Joshua Zeichner, M.D.
, it was found that “the slow penetration of lipohydroxy acid results in an individual cell-by-cell exfoliation that is associated with excellent tolerability.”
What skin types is lipohydroxy acid best suited for
“LHA could be a good alternative for those who can’t tolerate other chemical exfoliants,” suggests Dr. Lortscher, “because its larger molecular structure could produce slower, less-deep skin penetration.
Preliminary evidence suggests that LHA could be a gentler and better-tolerated chemical exfoliant than salicylic acid.
” In other words, for those with sensitive and acne-prone skin, lipohydroxy acid could prove to be quite the game-changer.
That being said, it’s always better to err on the side of caution, especially when it comes to your skin’s health. “Lipohydroxy acid is theoretically safe for all skin types, as it has a pH similar to normal skin (pH 5.
5), but our general skin care advice is to introduce new products cautiously,” Dr. Lortscher says. “If you have any concern that a product may not react well with your skin, we recommend applying the product to the inner part of your upper arm twice daily for seven days.
If all goes well, go ahead and try on a limited area of your face.”
Any words of caution?
“Be careful not to over-exfoliate, especially if you have sensitive skin,” warns Dr. Lortscher. “Over-exfoliation can cause redness, a feeling of tightness, sensitivity, and soreness. Aggressive use of physical or chemical exfoliants can compromise the outer layer of your skin, impairing its ability to shield you from external damaging factors.”
Below, we’ve hand-selected some of our favorite skincare products that feature LHA, so you can try out the new, gentle exfoliator for yourself.
1La Roche-Posay Effaclar DUO Acne Spot Treatment
Courtesy of La Roche-Posay
This spot treatment uses a blend of benzoyl peroxide and lipohydroxy acid that works fast to help clear up acne blemishes, whiteheads, and blackheads. , really fast.
The brand claims that you may see results in as soon as three days, but always remember that every skin type is different and reacts differently to skincare products, so you may need to wait a while longer to see results.
To use, first remove makeup and cleanse skin thoroughly, and then apply on targeted areas.
2Garnier SkinActive Clearly Brighter Dark Spot Corrector
Courtesy of Garnier
This skin-brightening, acne-clearing, and dark spot-fading treatment combines LHA with vitamins C and E to help increase skin cell turnover for a more radiant complexion. Use twice a day after cleansing skin, and once the product absorbs, seal in the ingredients by adding your favorite moisturizer on top.
3IT Cosmetics Confidence In A Cream Rosy Tone
Courtesy of IT Cosmetics
Gently exfoliate dull skin and give your face and neck a boost of hydration with this moisturizer. Its rosy-toned pigments visually give skin an instant pick-me-up, and in the long run, this moisturizer will stimulate cellular turnover for a brighter complexion.
3 SkinCeuticals LHA Cleanser Gel
Courtesy of SkinCeuticals
Many people immediately think of Skinceuticals’ cult fave CE Ferulic Serum when they think of the brand, but the often-sold out LHA Cleanser has a near-obsessive following of its own, thanks to its acne-fighting combination of lipohydroxy acid, glycolic acid, salicylic acid. If you can get off the waitlist (and we suggest you try), use twice a day by gently massaging the product into your face and neck and rinsing with warm water.
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AHA vs BHA: Acids Explained
Hydroxy acids are chemical exfoliants that are often used in skincare products to treat acne, sun damage, and a variety of other skin conditions.
They are mainly split into two groups; Alpha-Hydroxy Acids (AHAs) and Beta-Hydroxy Acids (BHAs). However, more recently, Poly-Hydroxy Acids (PHAs) and AldoBionic Acids (BAs) have been added to the list.
So what is AHA? What is BHA? And what is the difference between AHA vs BHA?
What is AHA?
AHAs are water-soluble carboxylic acids made from sugars and fruits that help exfoliate the skin. They do this by removing calcium ions from the bonds that hold skin cells together which weakens the bonds and allows exfoliation to take place .
AHAs are commonly used to treat the signs of sun-damage (photoaging), such as pigmentation, fine lines and wrinkles, enlarged pores, and uneven skin tone. They are generally suitable for all skin types although those with sensitive skin may need to gradually build up a tolerance to AHAs in order to avoid irritation.
Skin Tip: If irritation is a concern for you, opt for AHAs with a higher molecular weight as this means that less of the ingredient is able to penetrate the skin or is slower to penetrate the skin.
Examples of AHAs include (molecular weight):
- Glycolic Acid (72)
- Lactic Acid (90)
- Malic Acid (134)
- Tartaric Acid (150)
- Mandelic Acid (152)
- Citric Acid (192)
Glycolic acid is probably the most well-known and commonly used AHA and is made from the sugar cane plant. It has the smallest molecular weight among AHAs which means that it is better able to penetrate the skin and can be more effective. However, this also means that it has the potential to be more irritating.
Lactic acid is another well-known AHA that is made from the sugars found in milk (lactose). It is naturally present in our skin as part of the natural moisturizing factors (NMFs) which means that it makes an excellent moisturizer. Lactic acid is generally less irritating than glycolic acid and, due to its moisturizing properties, may be more suitable for those with dry skin.
Malic acid is made from acids found in fruits such as apples. It is less effective than both glycolic acid and lactic acid which is ly due to its larger molecular weight. However, it may enhance the effects of other acids when used in combination .
Tartaric acid is a lesser-known AHA that is made from acids found in grapes (and wine!). There is less research to support the effectiveness of tartaric acid, but it is known to have antioxidant properties.
- Juice Beauty Green Apple Age Defy Moisturizer
Mandelic acid is made from bitter almond extracts and has a particularly large molecular weight. This means that it is unly to cause irritation but probably needs to be combined with other AHAs or BHAs in order to be effective. However, it does have antibacterial and anti-inflammatory properties which may be of benefit to those with acne .
- Exuviance Performance Peel AP25
- The Ordinary Mandelic Acid 10% + HA
Citric acid is made from citrus fruits and has the largest molecular weight among AHAs. It is often added into skincare products to adjust the pH level closer to the skin’s natural pH (approx. 4.7 – 6). Research regarding the effectiveness of citric acid as a chemical exfoliant has generally looked at concentrations higher than those found within over-the-counter skincare products.
What is BHA?
BHAs are oil-soluble carboxylic acids that can penetrate deeper into the pores to exfoliate and remove dead skin cells and sebum. The most common BHA is salicylic acid but some AHAs, such as malic acid and citric acid, are also BHAs . In addition, derivatives of salicylic acid, such as beta-lipo-hydroxy acid (LHA), are also considered to be BHAs.
BHAs are commonly used to improve the appearance of acne due to their antibacterial and anti-inflammatory properties and their ability to effectively penetrate pores.
Salicylic acid is made from the bark of the willow tree and has a higher molecular weight than a lot of AHAs (138). AHAs, salicylic acid can help exfoliate skin and reduce the signs of premature aging. However, due to its ability to reduce oil, it is better suited to oilier skin types in order to avoid over-drying skin.
Lipohydroxy Acid (LHA)
LHA is a form of salicylic acid that was developed by L’Oreal and is currently only available in their branded skincare products. salicylic acid, LHA dissolves in oil and can penetrate the oil glands to reduce oil production.
However, LHA does not penetrate the skin as easily as salicylic acid with research suggesting that only 6% of LHA penetrates the skin vs 58% of salicylic acid. This results in a different type of exfoliation to salicylic acid and AHAs, where LHAs slower penetration causes cell-by-cell exfoliation rather than the broader exfoliation seen with AHAs and other BHAs .
- LaRoche Posay Effaclar Duo Corrector
- Skinceuticals LHA Cleanser Gel
Citric Acid & Malic Acid
Citric acid and malic acid are both classed as AHAs & BHAs due to their chemical structure. Both appear to have antibacterial properties  and citric acid may have an astringent effect, meaning that it can help ‘dry-out’ the skin.
Other Differences Between AHA vs BHA
One key difference between AHAs vs BHAs is how they affect the skin’s photosensitivity.
Photosensitivity refers to the skin’s ability to tolerate UV radiation and plenty of skincare ingredients, as well as some medications, can affect this.
Skincare ingredients can be photosensitizing, meaning that they decrease the skin’s tolerance of UV radiation, or photoprotective, meaning that they increase the skin’s tolerance to UV radiation.
Generally speaking, BHAs are photoprotective whereas AHAs are photosensitizing – although this appears to mainly be the case for glycolic acid.
However, this key difference between AHA vs BHA shouldn’t really matter as we should all be wearing sunscreen every day (sometimes even indoors) to prevent sun damage in the first place.
Which Acids Should You Choose – AHA vs BHA vs Both?
The acid you choose to use will mainly be dependent on your skin type. Both AHAs and BHAs exfoliate the skin, improve the appearance of fine lines and wrinkles, and reduce pigmentation and other signs of sun damage.
However, BHAs are better suited to those with combination or oily, acne-prone skin types and may be too drying for dry and sensitive skin types.
AHAs are generally suitable for all skin types, but those with sensitive skin should opt for higher molecular weight AHAs in order to reduce the risk of irritation.
Those with dry skin may find that lactic acid suits them best due to its excellent ability to hydrate skin.
If you really can’t decide between AHA vs BHA, why not use both? Assuming that you do not have sensitive skin that is!
The Bottom Line
There isn’t a huge amount of difference between AHA vs BHA as both can achieve similar results. Broadly speaking, AHAs may be better for anti-aging and BHAs may be better for treating acne, however, this is not always the case.
Sometimes acne can be caused by dehydrated skin, in which case BHAs may worsen this and a hydrating AHA, such as lactic acid, may be best.
If you’re not sure which acid will best suit your skin, see your dermatologist for advice.
- Kornhauser, A., Coelho, S. & Hearing, V. (2010). ‘Applications of hydroxyl acids: classification, mechanisms, and photoactivity’, Clin Cosmet Investig Dermatol., 3, 135-142. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3047947/
- Smith, W. (1996). ‘Comparative effectiveness of alpha-hydroxy acids on skin properties’, Int J Cosmet Sci., 18(2), 75-83. Available at: https://www.ncbi.nlm.nih.gov/pubmed/19245467
- Dayal, S., Kalra, K. & Priyadarshini, S. (2019). ‘Comparative study of efficacy and safety of 45% mandelic acid versus 30% salicylic acid peels in mild-to-moderate acne vulgaris’, J Cosmer Dermatol., 19(2), 393 – 399. Available at: https://onlinelibrary.wiley.com/doi/abs/10.1111/jocd.13168
- Zeichner, J. (2016). ‘The use of lipohydroxy acid in skin care and acne treatment’, J Clin Aesthet Dermatol., 9(11), 40-43. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5300717/
- Tang, S. & Yang, J. (2018). ‘Dual effects of alpha-hydroxy acids on the skin’, Molecules, 23(4), 863. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017965/
What are Lipo Hydroxy Acids (LHA) and what can they do for your skin? — Scrollhype
In recent years, I've noticed that we've all become a lot savvier to different skincare ingredients.
We are way more eager now to research what's in the products we put on our face (THANK GOD!). By now, you should know what exfoliation means, at least in broad terms.
But, with so many new ingredients emerging, we're forced to step up our knowledge of skincare terminology almost every day.
The main ingredients I've noticed that people are eager to include in their regime are AHAs and BHAs.
As you're probably aware, Alpha Hydroxy Acids (AHAs) and Beta Hydroxy Acids (BHAs) speed up cell turnover and gently exfoliate the skin without being abrasive or stripping, gently resurfacing and improving skin texture.
AHAs (such as Glycolic Acid) are water-soluble, while BHAs ( Salicylic Acid) are oil-soluble, making them more effective at clearing out clogged pores.
Recently, a new acid family became increasingly popular, a family that is commonly referred to as LHAs – Lipo Hydroxy Acids (you may also see them listed on the label as capryloyl salicylic acid). The ingredient is increasingly found in creams, cleansers, toners and spot treatments thanks to its gentle exfoliating powers.
So what are LHAs?
Lipohydroxy acid is a derivative of Salicylic Acid and has skin renewing, exfoliating, and acne-treating properties. Its gentleness comes from its slower cell penetration compared to Salicylic Acid, due to a higher molecular weight.
LHAs are also more lipophilic than Salicylic Acid, this resulting in an individual cell-by-cell exfoliation that is associated with excellent tolerability. And while Salicylic Acid has a pH around 3, LHA’s has a PH around 5 which is much closer to the natural pH of the skin.
This means it’s less harsh to the skin natural barrier and even suitable for sensitive skin. Lipo Hydroxy Acids are also a great alternative to BHAs for oily skin that is prone to sensitivity or dehydration.
As an anti-aging ingredient, the use of LHAs use has been proved to result in dermal thickening and has been found to be an excellent hyaluronic acid, collagen, and elastin booster.
It also has gentle astringent properties, making it great for those with acne-prone skin, clogged pores, or uneven skin texture. It penetrates the skin less than Salicylic Acid, with proprieties similar to those of Glycolic Acid.
WHAT TYPE OF INGREDIENT IS: Acid
BENEFITS: Ensures individual cell-by-cell exfoliation, Perfect BHA for oily skin that is prone to sensitivity or dehydration, Epidermal thickening (Hyaluronic acid, collagen, and elastin booster), Gentle astringent properties and increased tolerability compared to Salicylic Acid.
WHO SHOULD USE IT: Generally, LHAs are safe for all skin types. Those with sensitive/reactive skin or eczema should do a patch test on the inside of the wrist before use, just to be safe.
HOW YOU CAN USE IT: Ideally, LHAs would be best used in a cleanser, toner or spot treatment.
PLAYS WELL WITH SPF, Niacinamide, Hyaluronic acid.
DON'T USE WITH: Retinol,Vitamin C,Multiple different acids (During your nighttime routine stick to only using it with one other to avoid dryness).
Products we love
LHA was first developed by L’Oreal researchers in the 1980s, and as such, is found exclusively in L’Oreal or L’Oreal-owned skincare products.