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Originally Posted by Carolyn /img/forum/go_quote.gif You can use Retin A any time of the year.I have read that the sun can alter the effectiveness of Tretinoin - Retin A's active ingredient. So use the Retin A at night and make sure you use lots of sunscreen during the day. As well Retin A will make you even more susceptible to the sun's rays - another reason to wear sunscreen during the day.
Before you use a moisturizer with Retin A, ask your pharmacist which brand will not reduce the effectiveness of the Tretinoin.
My Derm also told me use Retin-A at night. He told me during the day Retin-A doesn't work to its fullest because of your reason- the sun.
I use Retin-A my lotion is cetaphil also recomended by my derm.
Before you use a moisturizer with Retin A, ask your pharmacist which brand will not reduce the effectiveness of the Tretinoin.
My Derm also told me use Retin-A at night. He told me during the day Retin-A doesn't work to its fullest because of your reason- the sun.
I use Retin-A my lotion is cetaphil also recomended by my derm.