California Naturals Re:GRO Anti-Thinning Shampoo & Conditioner Set — 20 oz Duo with Biotin & Caffeine, Sulfate-Free

California Naturals Re:GRO Anti-Thinning Shampoo & Conditioner Set is a sulfate- and silicone-free duo formulated with biotin, caffeine, rosemary oil and nourishing botanicals to support fuller-looking hair and a healthier scalp.

This two-piece system combines a stimulating shampoo and a strengthening conditioner designed to target common causes of brittle, thinning hair. The formulas layer botanical active ingredients—like rosemary oil and caffeine—with supportive nutrients such as biotin, zinc and probiotics. Together they aim to reduce breakage, calm flakes and leave hair smoother and more manageable without harsh sulfates, parabens or silicones.

How does this set help reduce breakage and support thicker-looking hair?

The Re:GRO duo focuses on fortifying strands and reinforcing the scalp environment. Biotin helps strengthen fragile hair fibers while castor and argan oils help smooth and repair surface damage. Regular use can make hair feel stronger and look fuller by reducing visible breakage and improving shine.

• Biotin fortifies weakened strands to minimize snap and split ends
• Castor and argan oils add moisture and surface repair for smoother hair
• Zinc and probiotics support scalp balance for a healthier growth environment

What role do rosemary oil and caffeine play in the formulas?

Rosemary oil and caffeine are included to stimulate the scalp and encourage an environment supportive of hair retention. Rosemary provides a natural, invigorating scent while promoting scalp circulation, and caffeine helps energize follicle activity when applied topically. These ingredients pair with supporting botanicals rather than acting as standalone treatments.

• Rosemary oil for scalp circulation and a fresh herbal fragrance
• Caffeine to boost scalp stimulation in topical application
• Combined with biotin and saw palmetto to address thinning factors

Is this set safe for color-treated or daily use?

Yes—the Re:GRO shampoo and conditioner are formulated to be gentle enough for daily use and compatible with color-treated hair. The formulas avoid sulfates, parabens, silicones and phthalates, and are naturally scented with rosemary, basil, sage and lavender for a milder fragrance profile. They’re also vegan, cruelty-free and Leaping Bunny certified.

• Sulfate- and silicone-free for gentler cleansing and conditioning
• Safe for regular use and color-treated hair when used as directed
• Non-toxic, vegan and cruelty-free with natural botanical scents

How quickly will I notice results and what should I expect?

Visible changes depend on individual hair condition and frequency of use; many users notice improved texture and reduced breakage after several washes, while fuller-looking results typically develop over weeks of consistent use. This set supports hair health gradually rather than providing immediate regrowth, so patience and routine application are recommended.

• Texture and manageability can improve after a few washes
• Reduced breakage often appears with regular use over several weeks
• Fuller-looking hair develops incrementally; consistent routine helps

Who is this for: California Naturals Re:GRO is designed for people experiencing thinning, brittle strands, early signs of receding, or those who want a scalp-focused haircare routine without harsh ingredients. It suits all hair types—including color-treated hair—and is a good choice if you prefer plant-forward, cruelty-free products with clinically-minded actives like biotin, caffeine, rosemary oil and saw palmetto.

Ingredients

Rosemary Oil