(18) AHA Serum

A precision gesture that elevates skin to its best version. AHA Serum by Prof. Dr. Steinkraus combines advanced chemical exfoliation with a delicate supportive, comfort-focused architecture to refine texture, activate cell renewal and reveal an even, luminous complexion. Its synergy of AHA, PHA and succinic acid works with clinical elegance, offering visible results without compromising tolerance.

Results and benefits

• Smart renewal: keratolytic effect that gently releases dead cells, smooths relief and improves tone evenness.
• Refined texture: visibly smoother pores and skin grain; even, controlled radiance.
• Positive skin stimulation: supports cell regeneration and collagen synthesis for firmness and elasticity.
• Comfort and hydration: moisturising, soothing matrix that conditions the barrier and gives a feeling of plump skin.
• High tolerance: precise formulation for all skin types, including sensitive skin.

Science and key actives

• Glycolic acid (7% | AHA): renews the stratum corneum with efficacy and precision, smoothing microtexture and boosting radiance.
• Gluconolactone (5% | PHA): gentle exfoliant with a hydrating profile, ideal for sensitive skin; evens the skin without irritation.
• Succinic acid (3%): dicarboxylic modulator that supports renewal and helps maintain a balanced skin environment.
• Comfort complex: allantoin and humectants (pentylene glycol, propanediol) that soothe, condition and support the barrier.
• Antioxidant support: tocopherol (vitamin E) and cyanocobalamin (B12) that accompany renewal with sensible antioxidant care.

How to use

• Application: after cleansing and/or toner, before serums and creams. Start at night, 2 times a week.
• Progression: if skin tolerates it, increase frequency up to daily use. Avoid the eye contour and mucous membranes.
• Essential sun protection: during use, avoid direct sun exposure and apply a broad-spectrum SPF.
• Skin signals: in case of unusual redness or irritation, discontinue use and consult a dermatologist if needed.

Ingredients (INCI)

Aqua (Water), Glycolic Acid, Gluconolactone, Pentylene Glycol, Succinic Acid, Sodium Hydroxide, Arginine, Propanediol, Phenoxyethanol, Allantoin, Xanthan Gum, Ethylhexylglycerin, Sodium Lauroyl Sarcosinate, Cyanocobalamin, Tocopherol.

Technical and tolerance details

• Conditioned barrier: the combination of humectants and allantoin contributes to a comfortable, balanced post-peel.
• Precise architecture: acids in harmonised proportions (AHA + PHA + succinic) for efficacy with respect for skin.
• Formulation philosophy: unisex, vegan; free from synthetic fragrances, silicones, microplastics, acrylates and parabens.

Recommended synergies

• After the serum: seal in with high-performance hydration (e.g., Hyaluron Serum) and a Face Care cream suited to your skin.
• Daytime routine: incorporate sun protection (Sun Protect SPF50+) as an essential step.
• Alternate days: combine with Niacin Serum 20% on nights without AHA to reinforce the barrier and tone evenness.