What should you not mix with vitamin C?
Ava Arnold
Updated on January 07, 2026
AHAs and BHAs, such as glycolic, salicylic, and lactic acids should never be used with Vitamin C. Vitamin C is an acid, too, and is unstable, so the pH balance will be thrown off by layering these ingredients together and might as well be useless.
Can you mix niacinamide and vitamin C?
You can absolutely use vitamin C and niacinamide together, Singh goes on to emphasize. That said, if you ever have any doubts as to whether it's safe to mix two skin care ingredients, a dermatologist can always offer advice. Your skin is affected by more than what you put on it.Can I use vitamin C with other products?
Vitamin C serum is typically applied once or twice per day. A good rule of thumb is to cleanse, tone, apply vitamin C serum, and then moisturize. It can be safely used with other active ingredients, although using alongside niacinamide may make vitamin C less effective.Can vitamin C be mixed with hyaluronic acid?
Can You Use Hyaluronic Acid and Vitamin C Together? Not all powerful skincare ingredients can be mixed, but hyaluronic acid and vitamin C are two that become even stronger when paired with one another. These ingredients can provide both immediate and lasting results when used together in anti-aging formulations.Can you use vitamin C with niacinamide and hyaluronic acid?
All three ingredients, hyaluronic acid, niacinamide, and vitamin C, are safe when used together. You can pair either hyaluronic acid with niacinamide serum or hyaluronic acid with vitamin C or three of them together.The Ordinary Vitamin C What You Can and Cannot Mix - With Real Examples!
Can I use vitamin C with niacinamide and retinol?
Can you use niacinamide with retinol and vitamin C? You can indeed use all three of these ingredients together, but the order in which you layer them play an important role when avoiding skin irritation. To gain optimal results I would suggest using a serum enriched in vitamin C during your morning routine.Can you mix vitamin C and salicylic acid?
Salicylic acid and vitamin C are both effective products on their own but, when combined, they can be even more beneficial. Whether you're looking to brighten your skin, reduce the likelihood of blemishes or just help slow down the skin's natural aging process, these ingredients may be just what you're looking for.What serums should not be mixed?
Don't Mix: Retinol with vitamin C, benzoyl peroxide, and AHA/BHA acids. AHA and BHA acids are exfoliating, which can dry out skin and cause further irritation if your skincare routine already includes retinol.Can you use vitamin C at night?
Many people wonder when the best time is to use their Vitamin C products. While some associate Vitamin C with daytime, others believe nights and evenings are best to use their Vitamin C-infused products. The truth is, Vitamin C can work effectively in the days or evenings.Does niacinamide cancel out vitamin C?
So, can you use niacinamide and vitamin C together? The short answer to your question: yes, you can.What goes first niacinamide or vitamin C?
Use your vitamin C serum first, and let it dry.Then "Let vitamin C completely dry prior to placing niacinamide," says Lamm. That way, the ascorbic acid has a chance to settle into the skin, and there's a smaller chance of combining the two actives.
Can you use BHA with vitamin C?
While AHA helps renew the skin's surface, BHA gets deeper into the pores to remove dead cells and excess sebum. Alpha hydroxy, beta hydroxy and Vitamin C are all acidic ingredients. Therefore, when you layer AHA/BHA with Vitamin C, you will experience irritation on your skin.What can you mix with vitamin C?
Vitamin C works best in combination with Vitamin E, Ferulic Acid, Vitamin B, and Hyaluronic Acid.Should vitamin C be taken in the morning or at night?
Experts typically recommend using vitamin C products in the morning and retinoids at night. This route often ends up working out best since retinol products can increase the skin's sensitivity to UV rays, which is why it's better to save them for p.m. use.What time of day is best to take vitamin C?
While Vitamin C is a largely helpful nutrient, it is a water-soluble nutrient, which is best absorbed when you take them empty stomach. An ideal way would be to take your supplement first thing in the morning, 30-45 minutes before your meal.Can I use vitamin C in the morning and retinol at night?
The Final TakeawayYou can definitely use retinol and vitamin C in your skincare routine, but it's probably best not to use them at the same time if you want to avoid irritating your skin. Consider applying retinol in the evenings and vitamin C in the mornings.