California Naturals Re:GRO Anti-Thinning Shampoo 20 fl oz — Biotin & Caffeine Formula for Strengthening & Scalp Support

California Naturals Re:GRO Anti-Thinning Shampoo is a sulfate-free, scalp-stimulating formula with biotin, caffeine, and rosemary oil designed to strengthen fragile hair and support a healthier-looking scalp.

This 20 fl oz shampoo blends botanical actives, vitamins, and targeted scalp-support ingredients to address thinning and breakage without harsh sulfates, silicones, or parabens. Formulated to be gentle enough for daily use and safe for color-treated hair, Re:GRO combines zinc, probiotics, saw palmetto, castor and argan oils with a natural rosemary-eucalyptus-basil scent. The aim is to fortify strands at the root and reduce flake buildup while keeping the formula vegan, Leaping Bunny certified, and made with mostly naturally derived ingredients.

How does Re:GRO help strengthen hair at the roots?

Re:GRO targets the hair root with a combination of biotin, caffeine and rosemary oil, chosen to support the appearance of stronger roots and reduced breakage. These actives work alongside conditioning oils to improve strand resiliency and smoothness, making hair easier to manage after washing.

• Biotin fortifies fine or brittle hair and supports strand integrity.
• Caffeine energizes the scalp environment to address thinning-prone areas.
• Rosemary oil helps stimulate the scalp and adds a fresh botanical aroma.
• Castor and argan oils repair and add shine to damaged cuticles.

Will this shampoo help with scalp balance and flakes?

The formula includes zinc and probiotics to help maintain a balanced scalp and reduce flake buildup that can accompany dryness or irritation. Regular use is intended to support a healthier scalp environment while cleansing without stripping essential oils.

• Zinc works to balance scalp conditions that can lead to flaking.
• Probiotics nourish the scalp microbiome for improved comfort.
• Sulfate-free surfactants cleanse gently to avoid over-drying.
• Natural botanicals soothe and refresh the scalp scent profile.

Is Re:GRO safe for color-treated or daily use?

Yes—this shampoo is formulated to be safe for color-treated hair and mild enough for everyday use thanks to its sulfate-, paraben- and silicone-free base. Its gentle cleansing system preserves color while delivering strengthening ingredients and conditioning oils for manageable hair after each wash.

• Sulfate-, paraben-, silicone- and phthalate-free formula protects treated hair.
• Daily-use mild surfactants keep hair hydrated and vibrant.
• Suitable for multiple hair textures and densities.
• Vegan and cruelty-free, certified by Leaping Bunny.

How long before I notice a difference, and what results are realistic?

Individual responses vary, but many users report improved hair manageability, less breakage, and a cleaner scalp within a few weeks of consistent use. Re:GRO supports the conditions that contribute to fuller-looking hair over time; it is not a guaranteed cure but a supportive, everyday shampoo designed to strengthen and protect.

• Expect improved strand strength and smoothness with regular use.
• Scalp balance and reduced flaking may appear after several washes.
• Fuller-looking hair develops gradually as breakage decreases.
• Best results come from combining with a consistent haircare routine.

Who is this for: California Naturals Re:GRO is suited for people noticing thinning, postpartum or seasonal shedding, brittle strands, or scalp flaking who want a clean, plant-forward shampoo that supports root strength. It’s formulated for all hair types, safe for color-treated hair, and ideal for anyone seeking a sulfate-free, cruelty-free product that focuses on scalp health and hair resilience.

Ingredients

Rosemary Oil