Our periods are already a blip on the horizon every month without adding ‘period hair’ to an already long list of less-than-stellar side effects that include painful cramps.
While we mostly think of skin as being reactive to hormonal fluctuations (hello breakouts), our menstrual cycle can affect the scalp and hair, too. So if you find that your scalp is as irritable as your mood and your strands never feel so clean they squeak after a good lather, ‘period hair’ could be to blame.
As ever, once you understand why your beauty routine has gone into free fall, the easier it is to find a solution. So consider this your comprehensive guide to avoiding hair that looks like a monthly oil-slick once and for all.
What causes your hair to become greasy on your period?
The same oil-producing glands that trigger acne in your face, are also present on the scalp and manifest as greasy roots. “The skin on our scalp and face both have sebaceous glands,” says Helen Reavey, trichologist and founder of Act+ Acre. “Fluctuating hormones can cause an imbalance of oil on the scalp,” which then travels down the length of the hair strand.
In particular, a week before your period there is a decrease in oestrogen and an increase in progesterone. “This hormonal change can stimulate the sebaceous glands in the skin to produce more oil,” she adds. “Mixed with product buildup, sweat, and dirt, this can contribute to greasy hair.”
Depending on your hormonal makeup, some people will be more prone to stringy strands than others. “Some birth control pills contain progestin, a synthetic form of progesterone, which can increase oil levels,” Helen explains.
“Those with polycystic ovary syndrome may see an increase in androgen hormones and an imbalanced estrogen level, which can affect the lipids on the scalp, leading to conditions such as dandruff, excessive oil and irritation. It truly varies from person to person, so it’s always best to consult with a medical professional first.”
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