Give sleepy hair a wake-up call with the Lazartigue Thicker Hair Densifying Serum. An intensely potent biometric peptide known as Capixyl penetrates deeply into the hair follicles, encouraging hair to grow longer and thicker. Unlike most hair serums, the formula does not weigh down or leave product residue within your tresses, leaving you with silky, bouncy hair. With 90% natural ingredients, you can be safe in the knowledge that every component within the hair serum is gentle and can be used on fine, delicate hair. Vegan and cruelty free.