What are Polyhydroxy Acids (PHA’s)?

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Polyhydroxy Acids or PHA’s are the next generation of alpha hydroxy acids, AHA’s, and act as chemical exfoliants. Alpha hydroxy acids work to exfoliate the upper most layers of skin which results in a smoother, fresher and more refined look. Used over a period of time, alpha hydroxy acids help to enhance hydration and encourage firmer, younger looking skin.

So how do PHA’s differ from AHA’s?

PHA’s are similar to AHA’s in that they perform the same role of exfoliation, but unlike AHA’s, PHA’s are gentler on skin causing less irritation so common to many alpha hydroxy acids. Alpha hydroxy acids can cause itching, burning and tingling sensations and may also cause skin to dry out which is why they are not recommended for sensitive skin, rosacea-prone skin and skin prone to inflammation. Read More…