my sister's having problems with dark underarms

dark underarms are sometimes caused by too strong chemical contents of deodorants and underarm creams. better to go back to the basic, wiping "tawas" a white crystal rock that serves as anti-persperation of the underarm skin. you can search the internet what is that and where it can be found. to be able to whiten your sister's black underarm, try to scrub calamansi fruit five minutes before taking a bath. that will help

Make a paste of Besan (chikpeas grams powder) and apply thorughly in the affected during night and have bath in the morning. Do this for a week your sisters underarm will gain the normal colour and shining too.

use some sensitive skin lotion i hope she used some strong deo u should use one directly over ur skin first stop using the deodrant then later try using some massage creams

she should stop using the product that made her underarm dark. she can also try the rituals that i do to my underarms. first, i don't scrub my underarms. second, i use whitening soap for them. i also use i whitening deodorant, i just use a mild one. if i have time, i extract some calamansi and put the juice on my underarms and arms 10 to 15 minutes before i take a bath.

According to them its sounds effective so just try it to feel the effect. I think it is not harmful for your sister. And i also heard that in our province and some people also tried that before. Its a big help also for confidence to get rid of it.

She should stop using the deodorant. She have a very sensitive skin, so it's better not to change the brand of the deodorant that often. There are lots of deodorants that can darken the underarm. Better put some lemon in the underarm and leave it there for have an hour. Do that everyday and you will see that it will lighten a bit.