PHAs, also known as polyhydroxy acids , gluconolactone , or lactobionic acid , are mild, water-soluble fruit acids that are gaining popularity in skincare. They are considered a gentle alternative to classic AHAs (alpha hydroxy acids) and BHAs (beta hydroxy acids) and combine exfoliating, moisturizing, and skin barrier-strengthening properties . Due to their particularly mild effect, PHAs are ideal for sensitive, dehydrated, or mature skin that needs intensive care without irritation.
Why are PHAs so good for the skin?
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Gentle exfoliation – PHA gently removes dead skin cells from the skin's surface without irritating the skin. They promote an even skin texture, improve the complexion, and contribute to a radiant glow.
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Moisturizing – PHAs bind water in the skin and support natural hydration. They smooth fine lines caused by dryness and leave the skin feeling plump and supple.
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Antioxidant – Some PHAs, such as gluconolactone, contain antioxidant properties that protect the skin from free radicals and thus prevent premature skin aging.
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Barrier strengthening – PHAs support the skin's lipid structure, reduce transepidermal water loss, and strengthen the natural skin barrier. This makes the skin more resistant to external stimuli and environmental stress.
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Soothing and anti-inflammatory – Compared to AHA or BHA, PHAs are particularly mild, reduce irritation and are therefore suitable for sensitive skin that is prone to redness, neurodermatitis or rosacea.
For which skin types is PHA suitable?
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Sensitive skin – Particularly mild and non-irritating, ideal for skin prone to redness, neurodermatitis or rosacea.
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Dry skin – Provides intense moisture, smooths fine lines and improves skin feel.
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Mature skin – Promotes cell renewal, improves elasticity and firms the skin's appearance.
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Normal to combination skin – Refines the skin's texture and pores without drying out or irritating the skin.
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Dehydrated skin – Supports water retention in the skin and strengthens the barrier, thereby reducing moisture loss.
In which products can you find PHA?
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Toner & Essences – For daily, gentle exfoliation after cleansing and to prepare the skin for further care products.
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Serums – Highly concentrated formulations for targeted smoothing of skin texture, promotion of cell renewal and improvement of skin elasticity.
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Moisturizing creams – Combined with lipids, PHA creams provide intensive hydration and barrier protection.
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Peels & Masks – For intensive treatment of uneven skin texture, fine lines or dull skin for a visibly refined and radiant complexion.
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Anti-aging products – PHA support the regeneration of skin cells, reduce dryness lines and contribute to a healthy, youthful skin structure.
Conclusion
PHAs (Polyhydroxy Acids, Gluconolactone, Lactobionic Acid) are gentle, multifunctional active ingredients that exfoliate, hydrate, and strengthen the skin barrier . They are particularly suitable for sensitive, dry, mature, or dehydrated skin and deliver visible results without irritating the skin. PHAs are therefore an ideal choice for anyone seeking gentle yet effective skincare that protects and soothes the skin while refining its texture.
