Richest sources are nuts, spinach, whole grains, olive oil, and sunflower oil. Benzoyl peroxide. Do Retinol and Vitamin C Interact Well If Applied Together? The Correct Order to Apply Your Skincare Products vitamin. To Using Niacinamide and Vitamin C Together 3. Retinol (evening) Serum. Retinol and Vitamin C: Can You Use Them Together? | hers Can retinol When it comes to pairing the two together, you can either use two separate products or one product that contains both retinol or niacinamide. Vitamin SPF (every morning) Here’s to many good skin days ahead…. Retinol Thankfully, using niacinamide in your skin-care routine can help combat the negative side effects of retinol. Can You Use Both Retinol and Vitamin C in Your Skin-Care …