Sienna Naturals – D.N.A. Scalp Serum – Hair Growth Serum for Thinning Hair, Scalp Repair & Strength – Nourishing, Active Treatment for Scalp Health with Biotin & Rosemary Oil – 1 oz

Support thicker, fuller, healthier hair—starting at the root. Sienna Naturals D.N.A. Scalp Serum is a lightweight, fast-absorbing, water-based formula powered by 21+ density-nourishing actives to promote hair growth and long-term scalp vitality. Dermatologist-tested and safe for all hair types, it delivers hydration, balances the scalp microbiome, and strengthens the foundation for visibly stronger, denser hair over time. In a consumer study of women with textured, thinning hair, 90% reported an increase in hair density and 87% saw stronger, healthier-looking strands after 8 weeks of consistent use. When paired with the full Sienna Naturals routine, 87% also noticed a visible reduction in hair shedding at the 16-week mark. Non-greasy, silicone-free, and fragrance-free, this daily serum reactivates and nourishes your scalp for hair that feels—and looks—revived. How To Use Use on wet or dry hair. Apply serum directly to the scalp using the dropper, working in sections. Gently massage with fingertips to encourage absorption. Do not rinse. Use daily for best results. Can be layered with your usual styling or scalp products.
Product Dimensions ‏ : ‎ 2 x 2 x 6 inches; 6.4 ounces
UPC ‏ : ‎ 850012703976
Manufacturer ‏ : ‎ Sienna Naturals LLC
ASIN ‏ : ‎ B0F2W8WS8K
Country of Origin ‏ : ‎ USA
Best Sellers Rank: #211,478 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #1,389 in Hair Regrowth Treatments
Customer Reviews: 4.2 4.2 out of 5 stars 15 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

Clinically Tested Performance: In 8 weeks, 90% saw an increase in hair density and 87% said their hair looked stronger
More than 21 Active Ingredients: Includes Copper Peptides, Biotin, Aloe, and Rosemary to boost hydration, soothe irritation, and support follicle health
Fast Absorbing, Non Greasy Formula: Lightweight, water-based texture disappears into the scalp without buildup; Perfect for daily use
Safe for All Hair Types: Fragrance free, silicone free, and dermatologist tested; Works on straight, wavy, curly, coily, and color treated hair
Reduces Shedding Over Time: After 16 weeks of using D.N.A. Scalp Serum plus the full Sienna Naturals regimen, 87% reported less hair loss. Claims based on an independent consumer testing panel of 39 women with textured, shedding hair over 16 weeks.