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Niacinamide after Tretinoin

 
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Powder77



Joined: 18 Jan 2008
Posts: 25
Location: Italy

PostPosted: Fri Feb 12, 2010 1:16 pm    Post subject: Niacinamide after Tretinoin Reply with quote

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
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Joined: 10 Dec 2004
Posts: 3177

PostPosted: Fri Feb 12, 2010 2:02 pm    Post subject: Reply with quote

It is better to space more to increase absorption but 2-3 hours should suffice if the alternative is inconvenient.
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