A member asked:

How exactly does tretinoin 'drain' whiteheads?

A doctor has provided 1 answer

It doesn't. : It promotes cell turnover and growth if the deeper cell layers which causes shedding of the superficial layers and the associated shifts while decreasing rue activity of the sebaceous glands to decrease the future formation of whiteheads or sebaceous cysts.

Answered 4/12/2018

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