ETUDE House My Lash Serum is enriched with Biotin, a key ingredient known for its benefits to hair health, now aimed to strengthen and nourish your eyelashes. Its upgraded formula features a clean, colorless base that absorbs without stickiness, and the convenient mascara brush type allows for easy application, ensuring the product reaches the roots of the lashes. Key Benefits:- 1. Enriched with Biotin to strengthen and nourish lashes 2. Upgraded clear formula for non-sticky, quick absorption 3. Easy-to-use mascara brush for precise application to lash roots