Can I use Retin-A and vitamin C at the same time?

Retin A and Vitamin C both are great anti aging skin care products. However, both can be irritating, so it is best to do the Vitamin C in AM and Retin A in the PM

You should use the Vitamin C during the day  accompanied with SPF 35 or higher with at east 7% zinc in it, alternating nights with Retin- A. For example: Monday morning you decide to use the Vitamin C in your skin regimen, use the Retin- A Tuesday night; and so on.  

Using both is a great idea and it will produce beautiful results, as long as you apply them correctly at the time of day that allows them to be at each products best. Good luck to you. 

Retin A may be used in conjunction with a topical vitamin C product. However, the topical vitamin C product should be applied at least 30 minutes before or after the Retin A. Also, the vitamin C product when used in combination with Retin A may cause irritation and thus would suggest this protocol only after a dermatologist reviews with you. The topical vitamin C product should be approved first by your dermatologist as well since there are so many "gimmicky" products out there.

It is always important to know what you want to accomplish with any skin care program. In general, you want to protect in the morning and repair in the evening. My favorite combo is Vitamin C with sunscreen in the daytime, because the sunscreen blocks UV light and the Vitamin C is a protective antioxidant. Retin A is the gold standard for PM repair and since it is very unstable to light, it does not work well during the day. As always, your personal dermatologist's advise is best.

Retin-A and topical Vitamin C are very important for good skin care.  Just use the Retin-A at night and the Vitamin C in the morning - never together.  Also, the addition of a glycolic lotion and sunscreen to your morning regimen would further add to your skin rejuvenation.