“Making use of onions to the scalp is a really well-described technique for treating hair for a few years. Some say it causes hair loss, some say it cures hair loss,” says Farjo. “What it does do is trigger irritant results on the scalp and subsequently irritation, which in flip causes a short lived improve of blood move. It’s well-known that irritation of the scalp could cause non permanent hair progress due to this.”
There’s little analysis on the query, however a small 2002 study of a group of people with a sort of hair loss generally known as alopecia areata discovered that those that utilized onion juice to their hair noticed extra hair progress than a management group that utilized plain faucet water.
However, Farjo cautions that overuse of onion on hair can lead to dryness, pores and skin harm, and even eczema, which might imply the reverse impact: hair loss resulting from breakage. So far as shine goes, she has by no means encountered any scientific proof to help Cardi B’s declare however concedes that the onion’s sulfur—the identical chemical component that may make you cry when chopping them—might probably have a smoothing impact on hair.
“The sulfur bonds that hyperlink hair fibers could be broken in day-to-day weathering so probably sulfur compounds in onions can restore these bonds which might make the hair look smoother and subsequently probably shinier,” says Farjo.
Hair graying, in the meantime, is attributed to the dearth of the catalase enzyme in pigment cells of the hair. Onions do include catalase, however in accordance with Farjo, pigment cells in hair lie under the pores and skin’s floor at a degree that can not be penetrated by onion juice, and subsequently couldn’t flip again the clock on graying hair.
Farjo additionally warns in opposition to getting too caught up within the concept of pure treatments.
“The thought of utilizing a “pure” substance for the hair or scalp is usually promoted,” she says. “Nevertheless, pure merchandise are made up of chemical compounds—some good and a few dangerous. Keep in mind that overuse of something could be dangerous.”
So there you may have it. Subsequent time you see a pic of Cardi B, say “Targets!” however examine the information earlier than you strive superstar magnificence hacks.