Brighten your complexion with TIRTIR Pure Vitamin C24 Serum. This advanced formula contains 24% pure Vitamin C, triple collagen, and Cica-7 Complex to help improve skin elasticity, lighten blemishes, and even out skin tone. Dermatologist tested, this serum is designed to reveal a more radiant and youthful appearance. It also offers firming and toning benefits. Suitable for sensitive skin, this serum has undergone tests for melasma care and elasticity improvement. To use, apply a moderate amount after toning and pat to aid absorption.