Our clinically proven scalp serum reduces signs of shedding, hair fallout + thinning at the scalp for thicker, fuller-looking hair in as few as 90 days.* *Based on an expert grading evaluation on 34 panelists after use of the Densify Shampoo, Conditioner and Serum

Our clinically proven scalp serum reduces signs of shedding, hair fallout + thinning at the scalp for thicker, fuller-looking hair in as few as 90 days.*
*Based on an expert grading evaluation on 34 panelists after use of the Densify Shampoo, Conditioner and Serum

Size

Densifying Serum For Thinning Hair

Standard

Prefill

Our gentle, sulfate-free shampoo instantly boosts volume + thickens strands while promoting fuller-looking hair over time. Ultra-concentrated so you only need half your usual amount.

Our gentle, sulfate-free shampoo instantly boosts volume + thickens strands while promoting fuller-looking hair over time. Ultra-concentrated so you only need half your usual amount.

Densify Concentrated Shampoo

Our lightweight, silicone-free conditioner instantly boosts shine + thickens strands while promoting fuller-looking hair over time. Ultra-concentrated so you only need half your usual amount.

Our lightweight, silicone-free conditioner instantly boosts shine + thickens strands while promoting fuller-looking hair over time. Ultra-concentrated so you only need half your usual amount.

Densify Concentrated Conditioner

Our lightweight leave-in for both hair and scalp. For hair, this serum spray is clinically shown to control frizz, boost shine, protect from heat, and repair damage for up to 3x stronger hair in just one use.* For scalp, this serum is microbiome-friendly, derm-tested and restores balance and hydration. Real Simple Smart Beauty Award Winner 2024: Best Scalp Treatment

Our lightweight leave-in for both hair and scalp. For hair, this serum spray is clinically shown to control frizz, boost shine, protect from heat, and repair damage for up to 3x stronger hair in just one use.* For scalp, this serum is microbiome-friendly, derm-tested and restores balance and hydration.
Real Simple Smart Beauty Award Winner 2024: Best Scalp Treatment

BioBrew™ Fermented Strengthening Serum

55 ml

30 ml

30 ml Prefill

The good-for-you dry shampoo is a talc-free powder that absorbs oil + sweat instantly, and leaves hair looking, feeling and smelling clean, without disrupting the scalp or building up in hair. SELF HEALTHY Beauty Award Winner 2024: Best Dry Shampoo

The good-for-you dry shampoo is a talc-free powder that absorbs oil + sweat instantly, and leaves hair looking, feeling and smelling clean, without disrupting the scalp or building up in hair.
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Clarify Dry Shampoo Powder

Made with no added water, this ultra-concentrated, sulfate-free shampoo (SLS/SLES) gently cleanses + strengthens weak, damaged hair.

Strengthen Concentrated Shampoo

Made with no added water, this ultra-concentrated, peptide-infused conditioner repairs + hydrates without weighing down weak, damaged hair.

Made with no added water, this ultra-concentrated, peptide-infused conditioner repairs + hydrates without weighing down weak, damaged hair.

Strengthen Concentrated Conditioner

This pre-shampoo scalp treatment that gently clears dirt, excess oil, and product build up and rebalances the microbiome for a fresh, clean scalp.

This pre-shampoo scalp treatment that gently clears dirt, excess oil, and product build up and rebalances the microbiome for a fresh, clean scalp.

Title

AHA+ACV Pre-Shampoo Scalp Clarifying Rinse

Default Title

A lightweight, leave-in salicylic acid serum that gets to the root of oily scalp + hair, reducing and controlling excess oil where it starts.

Clarify Balancing Serum for Oily Scalp

Discover biological care for roots, scalp and hair with this four-piece collection designed to strengthen from root to tip.

Discover biological care for roots, scalp and hair with this four-piece collection designed to strengthen from root to tip.

The Mini Trial Kit

The good-for-you dry shampoo x 2! This bundle features two of the award-winning aerosol-free, talc-free dry shampoos that absorbs both oil and sweat in between wash days to extend your style and keep hair looking and smelling fresh. SELF HEALTHY Beauty Award Winner 2024: Best Dry Shampoo

The good-for-you dry shampoo x 2!  This bundle features two of the award-winning aerosol-free, talc-free dry shampoos that absorbs both oil and sweat in between wash days to extend your style and keep hair looking and smelling fresh.
SELF HEALTHY Beauty Award Winner 2024: Best Dry Shampoo

Clarify Dry Shampoo Powder + Refill

The ultimate clarifying duo for roots, scalp + hair: AHA+ACV Pre-Shampoo Scalp Clarifying Rinse + Talc-Free Dry Shampoo Powder

The ultimate clarifying duo for roots, scalp + hair:  AHA+ACV Pre-Shampoo Scalp Clarifying Rinse + Talc-Free Dry Shampoo Powder

Ultimate Clarifying Duo

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Collection

Explore The Rootist’s full collection of fermented hair and scalp care—science-backed formulas designed to strengthen, balance, and restore from root to tip.