COSRX Refresh AHA/BHA Vitamin C Booster Serum 30ml hair treatment If you've struggled with perennial

If you've struggled with perennial dryness or seasonal chapping

Hydrating Power: Includes multiple forms of hyaluronic acid

drying is minimal

The kit provides a complete routine in miniature: cleanse

COSRX Refresh AHA/BHA Vitamin C Booster Serum 30ml hair treatment If you've struggled with perennialCOSRX Refresh AHA BHA Vitamin C Booster Serum: Three Actives for Texture and Tone COSRX's Refresh AHA BHA Vitamin C Booster Serum combines three of the most effective brightening and exfoliating actives into a single serum: ascorbic acid (vitamin C), glycolic acid (AHA), and salicylic acid (BHA). At $24. 96 for 30ml, this is aggressively priced for a triple active formulation. Most brands sell each active separately; COSRX's approach is consolidated