Two old ingredients and one new one, in a bottle you can reach for every day. Rosemary water and fermented rice water carry the formula; real Rosmarinus officinalis leaf and stem oil gives it the fresh herbaceous scent instead of a fragrance blend; and Biotinoyl Tripeptide-1, a biotin linked peptide, sits alongside them. The full list runs to twelve items and is printed below.

It goes on damp hair after washing, or gets parted into the scalp and massaged in, or gets spritzed on dry hair to tame flyaways. It is water light rather than oily, so it does not weigh a style down. Four fluid ounces, 118 mL, in an amber glass bottle with a fine mist top. Natural separation is normal, so give it a shake. Two year shelf life.

Prefer an oil? Rosemary & Castor Hair Oil, $15.99