Kerastase Densifique Mask revitalizes thinning and weakened hair with a luxurious formula enriched with hyaluronic acid and ceramides. This intensive 200ml treatment penetrates deep into each strand, restoring density, strength, and elasticity while improving texture and shine. Perfect for fine or fragile hair that needs nourishment and body. Apply to damp hair, leave for 5-10 minutes, then rinse thoroughly for visibly thicker, healthier-looking locks.