Hello, I am a pharmacist, and yes its ok to use a facial mask, such as this one, if you use Retin A. Since retinoids can be drying, this type of mask, which provides a lot of moisture, can definitely be good. If your skin is ultra sensitive and the Retin A dries you out too much, to the point of skin irritation, I would not use this mask on the same night that you apply the Retin A, but would opt instead to give your face a breather for a day and then apply the mask another night. Hope that helps!
You can, just make sure you use an SPF of 30 during the day. The retin-a perscription you have makes you sensitive to the suns rays. The mask will not add to your photo-sensitivity.