California Naturals Re:GRO Anti-Thinning Scalp Serum 3 oz — 5% Capixyl, Cooling Non-Sticky Formula

If you’re noticing thinner hair, increased shedding, or fragile strands, this serum combines a clinically studied peptide complex with botanical oils and targeted actives to address multiple scalp and hair concerns without heavy residues or harsh preservatives. The lightweight, cooling texture applies easily to the scalp, absorbs quickly, and is safe for color- and chemically-treated hair. California Naturals developed this vegan, cruelty-free formula to offer a cleaner alternative to costly or sticky treatments.

How does the serum work to help thinning hair?

The formula centers on 5% Capixyl, a peptide-rich complex shown in studies to support hair density, alongside caffeine to stimulate scalp circulation and biotin to strengthen brittle strands. Together these actives create an environment that supports healthier hair growth cycles rather than masking the issue with temporary thickness.

• 5% Capixyl to promote visible density over time
• Caffeine to energize follicles and improve scalp microcirculation
• Biotin and rice silica for stronger, less breakage-prone hair
• Saw palmetto and pumpkin seed oil help address hormonal and nutrient factors

How do I apply the serum and how often should I use it?

Apply the serum directly to dry or damp areas of the scalp using targeted drops and massage gently; no rinsing required. The brand recommends using it multiple times per week as part of a consistent routine—continued use for several weeks yields the most reliable results.

• Apply 4x per week for optimal results observed in clinical testing
• Gently part hair, dispense to scalp, and massage to distribute
• Leaves a non-greasy, cooling finish that won’t weigh hair down
• Works alongside shampoo and conditioner in the Re:GRO regimen

Is this safe for color-treated, chemically-treated, or protective-style hair?

The serum is formulated to be compatible with colored and chemically processed hair, and its lightweight base avoids buildup that can interfere with extensions or protective styles. Because it is free from sulfates, parabens, silicones and synthetic fragrances, it minimizes the chance of drying or stripping treated hair.

• Safe for color-treated and chemically relaxed hair
• Non-sticky texture is friendly to extensions, braids, or buns
• 98% naturally derived ingredients reduce harsh exposure
• Vegan and cruelty-free, suitable for sensitive scalps

What results can I reasonably expect and how long until I see them?

Clinical use of the Re:GRO set (serum plus shampoo and conditioner) over 90 days showed meaningful reductions in breakage and improvements in fuller appearance for most participants. Individual outcomes vary, but consistent application across three months aligned with the study’s recommendations delivers the most reliable changes.

• Study participants reported less breakage and stronger strands after 90 days
• Regular use (about 12 weeks) is suggested for visible density gains
• Immediate benefits include improved scalp comfort and non-greasy finish
• Consult a physician if pregnant or breastfeeding before use

Who this is for: Re:GRO Anti-Thinning Scalp Serum is designed for anyone seeing early signs of thinning, dealing with brittle or breaking hair, recovering from postpartum or stress-related shedding, or looking to strengthen fragile strands without heavy or sticky products. It’s especially useful for people who want a cleaner, plant-forward formula that pairs well with color-treated and styled hair and who plan to follow a consistent scalp-care routine for best results.