Hair

Signal care, right at the root.

Root Signal Hair Serum

Give the scalp the same attention as skin, with a leave-in peptide ritual for the look of fuller, thicker hair and a fresher-feeling root area.

Five biomimetic peptides for the root area
For fuller-looking hair and a fresher scalp feel
Leave-in drops made for slow, deliberate massage

$44.00

$10 US shipping, free over $60

Formula-led daily ritual $10 US shipping, free over $60 Label details below

Try one 1 x Root Signal Hair Serum $44.00 Best routine buy 2-pack $88.00 - qualifies for free shipping Stock up 3-pack $132.00

Daily format $44.00

Formula first Hair

The scalp signal

The skinification of hair, taken seriously.

Your scalp is skin, and for too long it has been left as an afterthought. Root Signal pairs five biomimetic peptides with rosemary, saw palmetto and botanical extracts in a leave-in format.

It is made for the look of fuller, thicker hair and a fresher-feeling scalp, without drifting into medical hair claims.

Why this exists

A scalp-first ritual for the root area, made for the appearance of fuller-looking hair and a cleaner, fresher-feeling part line.

For anyone ready to give the scalp the same attention as a face serum ritual.

Massage into the root area and leave in, turning a rushed step into a focused moment.

Built around the appearance of fuller-looking hair and a fresher-feeling scalp surface.

Scalp ritual details

A leave-in dropper built for slow scalp massage.

Look through the dropper format and label details before you bring it into your scalp routine.

Formula role

Work a few drops into the root area as a leave-in scalp step for a fresher feel and the look of thicker, fuller hair.

Five-peptide blend

Supports the appearance of thicker, fuller-looking hair.

Arginine

Helps hair feel stronger and healthier-looking.

Rosemary, Eucalyptus + Saw Palmetto

Botanical extracts for scalp-surface care.

How to use

Built for a routine you can repeat.

Apply to clean skin or scalp as directed.
Massage gently until absorbed.
Layer with the rest of your routine.

Full product details

Label-level clarity, without the clutter.

Product information is general beauty and wellness information. Benefits describe appearance, conditioning, normal maintenance or performance support, not disease-related outcomes.

Ingredients, use and warnings

Full ingredients: Water, Glycerin, Lecithin, Propanediol, Arginine, Caprylyl Glycol, Citric Acid, Eucalyptus Globulus Leaf Extract, Tocopherol, sh-Polypeptide-11, sh-Polypeptide-1, sh-Oligopeptide-2, sh-Oligopeptide-10, sh-Polypeptide-9, Lactic Acid, Glycine Soja (Soybean) Germ Extract, Triticum Vulgare (Wheat) Germ Extract, Scutellaria Baicalensis Root Extract, Sodium Benzoate, Gluconolactone, Calcium Gluconate, Potassium Sorbate, Rosmarinus Officinalis (Rosemary) Extract, Xanthan Gum, Sodium Gluconate, Serenoa Repens (Saw Palmetto) Extract.
Manufacturer country: USA
Product amount: 1 fl oz / 30 ml
Gross weight: 2.88 oz / 0.18 lbs / 82 g
Suggested use: Apply a few drops directly to the scalp. Gently massage into the scalp with fingertips for 1-2 minutes to ensure even distribution.
Warning: For external use only. Keep out of reach of children. Store in a cool, dry place.