Q. Is this suitable for beginners?
Ans. Yes, but start with a few times per week to allow your skin to adjust.

Q. Can it be used during the day?
Ans. No, retinal products should be used at night only.

Q. Can I use it with Vitamin C?
Ans. It is best to use Vitamin C in the morning and retinal at night.

Q. Is sunscreen necessary while using this product?
Ans. Yes, daily sunscreen is essential as retinal increases sun sensitivity.