Glycolic Acid (AHA) — Ingredients

Category: Ingredients

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A water-soluble exfoliant that removes dead skin cells from the surface

What is Glycolic Acid (AHA)?

A water-soluble exfoliant that removes dead skin cells from the surface

Small molecular size provides high penetration, brightening skin tone and smoothing texture.

Caution

Increases UV sensitivity after use; sunscreen is essential.

Key properties & actions

Glycolic acid (AHA) is a sugarcane-derived alpha hydroxy acid, and with the smallest molecular size among AHAs it is known to have high penetration. It weakens the bonds between epidermal cells to help shed old dead cells, and being water-soluble it acts mainly on tidying the skin surface. It is commonly used to improve surface texture and tone.

How to manage

Gradual use is generally recommended: starting with a low 5–10% concentration at night 1–2 times a week, then adjusting the frequency as the skin adapts. Because the barrier is temporarily weakened after exfoliation, it is best to pair it with moisturizing and soothing care. Be especially thorough with sun protection the day after use.

Good to know alongside

Because sensitivity to UV can increase after AHA use, sunscreen is emphasized. Using it at the same time as retinol or BHA can build up irritation.

Everyday care tips

When first using a glycolic acid product, it is best to test it on the inner forearm to check whether the stinging lingers for too long after application.

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Frequently Asked Questions (FAQ)

What is Glycolic Acid (AHA)?
A water-soluble exfoliant that removes dead skin cells from the surface. Small molecular size provides high penetration, brightening skin tone and smoothing texture.

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Sources & References

Medical Disclaimer

SKINROUTE is not a medical device or healthcare provider. All content is general skincare information for reference only. If you have concerns about your skin, please consult a board-certified dermatologist.