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Powder77
Joined: 18 Jan 2008
Posts: 26
Location: Italy
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 Posted: Fri Feb 12, 2010 1:16 pm Post subject: Niacinamide after Tretinoin |
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Dear Dr. Todorov.
If i apply Freederm (gel 4% niacinamide) two or three hour after tretinoin application is safe? Because I know that generally must weit 10 miunutes for every unit of pH when in the skin applly a products with different pH value.
Example if I apply L-ascorbic serum pH 3,5 and sunscreen pH 6 I weit 30 minutes witouth problem..
What do you tink about??
I want use niacinamide for rebuild skin barrier ( increase ceramides production) and for antiflammatory activity.
Kind regards |
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drtodorov
Site Admin
Joined: 10 Dec 2004
Posts: 3177
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| Posted: Fri Feb 12, 2010 2:02 pm Post subject: |
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| It is better to space more to increase absorption but 2-3 hours should suffice if the alternative is inconvenient. |
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