Has any of the products that you've put on your face burned or damaged your hair?
Because I'm sure you don't want that part of your skin to stay the same
While the rest of you is lighter..
My cousin said her hairline is damaged, I forgot what she said she used.

I've not experienced a skin lightener that damaged my hair!
The color of my hairline has never been a problem no matter how light I've become, it's always blended in, I've never had a dark hairline to begin with. My skin underneath is actually lighter and so is the skin on my scalp, it's always been lighter.

I would say that if my hairline became damaged as a result of what I was putting on my face, then I would be very very concerned. I have not heard of OR experienced such a problem. Whatever it is that she has been using, I would suggest she steers well clear from. If it is damaging your hair, Lord knows what it is doing to your face.

If you do manage to find out what it was, please let us know so others can avoid it too .

All I know is that what she used was a hydroquinone based product, & she mixed it with several other products.. she said it made the front of her hair brittle . She has used some very unsafe methods to lighten her skin, which is why I'm choosing my own way.. slowly & safely. I'm sure glad you haven't had that problem though... & I definitely don't plan to use anything she does.