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Polyhydroxy Acid (PHA)
PHA or polyhydroxy acid relates to ingredients including gluconolactone and lactobionic acid, which are made up of large molecules. They are typically gentler on the skin and cause less irritation than AHA’s. AHA’s are known to dry out the skin while PHA’s are ideal for both sensitive and dry skin types.
When applied to the skin as part of a clinical study, both PHA’s and AHA's are shown to be similar with anti-ageing benefits. PHA’s and AHA’s are similar and both are known to have anti-ageing benefits when tested in clinical studies when topically applied to the skin. However, AHA’s only contains one hydroxyl group and have been known to produce burning sensations in some people. In contrast, PHA’s contain multiple hydroxyl groups which will create less irritation but still have the same defying benefits. Sensitive skin types can also use PHA’s because it’s gentle and non-irritating, making it ideal for those with acne-prone skin or rosacea. It has a larger molecular composition which is believed to penetrate the skin at a slower rate which in turn causes less irritation. Therefore, PHA’s are believed to have a gentle and competitive edge due to its non-irritable features coupled with natural antioxidants and anti-ageing treatments.
There are various benefits when it comes to introducing PHA’s to your skincare routine such as its ability to promote cell turnover by sloughing off dead skin cells to reveal a smoother surface underneath. PHA’s have humectant effects which increase moisturisation. They also enhance the smoothness of the skin, elasticity, it has antioxidant effects and increases the skin barrier’s function. Furthermore, it also improves skin clarity and brightness, reduces the appearance of fine lines and wrinkles. Finally, PHA-infused products are known to reduce flare-ups in inflammatory conditions and can lower episodes of acne, rosacea, dermatitis and melasma.
Polyhydroxy acids are found in a range of our products across cleansers, face creams, serums and tonics. The Purifying Cleansing Gel from Exuviance is formulated with PHA to soothe and improve the skin’s texture. It’s a foaming facial cleanser that gently washes away makeup, surface oils and impurities without altering the skin’s natural moisture balance. The Exuviance Sheer Daily Protector is a triple anti-ageing fluid that also incorporates PHA into its formula. It provides ultra-sheer mineral protection against photodamage and environmental damage. Also the SkinRise bionic tonic from Exuviance is a daily anti-aging treatment toner with powerful moisturizing, antioxidant & anti-aging effects. Each pad is soaked in a solution enriched with PHAs, Marine Extracts and Pro-Vitamins A, C, and E, to improve skin’s overall tone, texture and radiance in one go.