Peptides
What does peptide serum do for hair? A plain-terms guide
What peptides are, the kinds used in hair care, what the research has and has not shown, and how to use a peptide serum...
Journal
Our blog
Hair care, routines, and what the words on a bottle actually mean.
Rosemary
How long to leave rosemary oil in hair, and is overnight fine
Minutes, hours or overnight: what changes the longer rosemary oil stays on the scalp, what the cautions say, and how to choose a time.
Rosemary
Does rosemary oil make hair greasy? It depends on the form
Why rosemary oil leaves roots greasy when it stays on, why the carrier is usually to blame, and how much it depends on your...
Life stages
Does perimenopause change hair texture? Dry, greasy and frizzy hair
Why hair can turn drier, greasier, frizzier or wavier in the years around menopause, what the research shows, and how to adjust a routine.
Fine hair
Hair care routine for fine oily hair, from wash to style
How often to wash, where conditioner goes, which products to keep off the roots, and a sample week for hair that is both fine...
Rosemary
Rosemary water vs rosemary oil: which suits your hair
What actually ends up in rosemary water and in rosemary oil, which hair each suits, how to make rosemary water safely, and how to...
Scalp serum
Scalp serum vs hair serum: different jobs, different places
A scalp serum is for the skin under the hair, a hair serum for the lengths. What each does, where hair oil fits, and...
Scalp serum
Scalp serum before or after leave-in conditioner? The full order
Where a scalp serum sits against leave-in, heat protectant, blow-drying, mousse and dry shampoo, with three routines to copy.
Scalp serum
How to apply scalp serum: a step-by-step guide
Parting, how many drops, massage, which applicator to use, what to do afterwards, and how to adapt it all for fine hair, curls and...