Divi Scalp Serum for Thinning Hair 1oz – Peptide & Rosemary Formula

Divi Scalp Serum is a clinical-strength, lightweight scalp treatment formulated with amino acids, caffeine, peptides, and rosemary oil to address thinning hair and scalp health. The formula targets product and oil buildup while promoting a balanced scalp environment—a key differentiator in the scalp-oil category.

Actives & efficacy: Divi's 12-week clinical study reported 90% improvement in hair fullness and 87% increase in hair density, grounding claims in measurable evidence rather than pure anecdote. The peptide + caffeine combo supports circulation and scalp nourishment; rosemary is a well-researched botanical for scalp wellness.

Application & feel: Applied to wet or dry scalp with a shake-and-massage ritual; no rinse needed. Users report a non-sticky, serum-like texture that doesn't weigh down fine or thinning hair—a notable advantage over heavier oils (Wild Growth, Mielle).

Scalp health: Reduces excess oil and product residue, ideal for those with buildup-prone scalps or frequent tight styles. Safe for extensions.

Considerations: At $48 for 1 fl oz ($48/oz), Divi is a premium buy—significantly pricier than Mielle Rosemary Mint (~$12/oz) or The Ordinary (~$20/oz). Growth claims, while clinically supported, reflect a 12-week study on a self-selected cohort. Community sentiment is positive but less ubiquitous than Mielle's viral TikTok presence. Some users note the serum can vary in appearance (clear to cloudy), which Divi attributes to formula stability but may concern first-time buyers.