Look, person, I don't even know what skin type 4 is so I'm no help. Why you so interested anyways? It's so bad for you to get a tan. It kills skin cells! You don't want to get cancer, do you?
Most skin cancers that develop because of sun exposure can take decades to appear. Other skin cancers may show within weeks or months.
1 month
how long does it take to grow a new layer of skin
I read 28 days, but i always hear 2 weeks. i'd say in 28 days, its totally renewed.
About five years.
imediately
Patience.
about a week
A person does not 'develop' autism - a person is born autistic.
From the time your breasts begin to develop, it should take two to three years to completely develop, however some girls do develop slower or faster than that.
It's May be take 2 days
Eight thousands years