Serum CosRx The AHA 2 BHA 2 Blemish Treatment Serum, exfoliating AHA 2% + BHA 2% for blemish-prone skin

CosRx The AHA 2 BHA 2 Blemish Treatment Serum is a lightweight chemical exfoliant formulated with 2% alpha hydroxy acid (AHA) and 2% beta hydroxy acid (BHA). The serum is intended for blemish‑prone and uneven skin textures and supports gentle removal of dead skin cells, unclogging of pores and refinement of skin surface to help improve tone and texture when used as part of a targeted evening routine.

Advantages

The formulation combines low‑concentration AHA and BHA to offer both surface exfoliation and pore penetration without heavy textures. Its lightweight, fast‑absorbing base helps active acids reach the skin while minimizing residue. Regular, controlled use can contribute to clearer skin appearance, reduced congestion and a smoother surface texture. The product is designed to complement other hydrating and barrier‑supporting steps rather than to replace them.

Suitable for

• Blemish‑prone skin with occasional breakouts
• Uneven skin texture and rough patches
• Congested pores and blackheads
• Evening routines focused on skin renewal

Key specifications

• Active acids: 2% AHA (alpha hydroxy acid) + 2% BHA (beta hydroxy acid)
• Texture: lightweight, fast‑absorbing serum
• Primary actions: chemical exfoliation, pore clarification, skin surface refinement
• Recommended use: targeted evening application

How to use

Apply a small amount to clean, dry skin in the evening after cleansing and before heavier treatments or moisturizers. Spread evenly over areas of concern, avoiding direct contact with eyes and mucous membranes. Start with 1–2 applications per week to assess tolerance and gradually increase frequency as the skin adapts. Follow with a hydrating serum and a moisturizer to support the skin barrier.

Usage recommendations

When using products with AHA and BHA, incorporate daily sun protection into your morning routine and avoid combining with other strong exfoliants or irritant actives on the same night. If irritation occurs, reduce frequency or suspend use until the skin recovers.