Ideal for fine strands in need of a nourishment boost, the Destined for Density MegaStrength+ Caffeine and Biotin Peptide Density Serum by Briogeo protects against the signs of hair thinning in as little as 16 weeks*. Developed with 97% natural-origin ingredients, the lightweight formula boasts a blend of caffeine and biotin peptides to promote a stronger feel with a fuller look. The brand’s proprietary density-boosting complex and microfluidic technology work from the root to support a more voluminous illusion, while its aqueous texture won’t leave any oily or greasy residue after application. *Compared to baseline in a 16-week study of 35 participants.