Scalp serum
Scalp serum before or after shower, and on wet or dry hair
Most leave-on scalp serums go on after the shower. Here is when that changes, what wet, damp or dry hair does to a serum,...
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Hair care, routines, and what the words on a bottle actually mean.
Water-based
Water-based vs oil-based hair serum: how they behave on fine hair
One base is built for skin, the other for fibre. How water-based, oil-based and silicone serums behave on fine, thick and curly hair, and...
Rosemary
How to apply rosemary oil to scalp without making hair greasy
Why rosemary oil leaves roots greasy, and how to dilute, apply, time and wash it out so it does not. Plus the water-based options...
Rosemary
Can you use rosemary oil on colored hair? What is and is not known
What actually fades hair colour, what is and is not known about rosemary oil on dyed, bleached and henna-coloured hair, and how to time...
Rosemary
Can you use rosemary oil every day? It depends on the form
Neat, diluted, left in or washed out: how often each form of rosemary oil suits a scalp, the signs to stop, who should check...
Fine hair
Greasy roots and dry ends: a routine for both at once
The scalp makes oil while the ends are the oldest, most weathered part of the hair. A split routine looks after each zone on...
Scalp serum
Hair oil or serum: which one goes on before the other
Thin before thick, water before oil. The order for scalp serums, smoothing serums, leave-ins, heat protectant and hair oil, and the one exception: oil...
Scalp serum
How often to use scalp serum, and how long a bottle lasts
Daily, weekly or twice a day: how to read the bottle, fit a serum around washing, use two serums, and work out how long...
Rosemary
Rosemary for hair: oil, extract, water and serum compared
The four forms rosemary takes in hair care, what each is made of, how to use it safely, what the research tested, and how...