Liss Protein Unlimited Hair Serum delivers intensive nourishment to restore strength and vitality to damaged or weakened strands. Enriched with protein-based actives, this lightweight serum penetrates the hair shaft to repair structural integrity while smoothing the cuticle layer. The formula reduces frizz, enhances natural shine, and improves manageability without weighing hair down. Ideal for all hair types, particularly those prone to breakage or dullness, this serum works as both a styling aid and restorative treatment. Apply to damp or dry hair for visibly healthier, more resilient locks.