Apart from products with low pH, as far as The Ordinary is concerned all is good. Thankfully, our experts weighed in on best practices. Still, despite the newbies that come and go with a predictable regularity, there are a handful of ingredients that remain tried-and-true, staples with scientifically-proven effects. 4 Glycolic Acid Toners That Are Worth the Extra Step in Your Skin-Care Routine

Evening Skin-Care Step #1: Cleanse Not Once, But TwiceBefore heading to bed, you should wash your face — even if you’re not wearing any makeup. So protecting against UV damage with an antioxidant—and, of course, daily SPF—is important.However, not all vitamin C products are created equal—and they can be irritating and finicky to use in some cases, Angela Lamb, M.D., director of Westside Mount Sinai Dermatology Faculty Practice, tells SELF. 6 Acne Hacks That Actually Work, According to a Dermatologist

9 Sunscreens That Won’t Leave a White Cast on Dark Skin Tones To learn more, visit By signing up, I agree to receive emails from Skincare.com and other L'Oreal brands and programs.

8 Korean Beauty Skin-Care Trends That Should be on Your Radar

HA and vitamin C have strong anti-aging properties that complement each other by combating aging in different ways. Since vitamin C can sometimes have a drying effect, HA will work well to restore moisture. Sodium Ascorbyl Phosphate Is The Version of Vitamin C Your Skin Needs Hyaluronic Acid and Vitamin C Combinations. These 6 Products Can Help Minimize Their Appearance Experts generally advise using vitamin C products in the morning and retinoids at night.In topical skin-care products, vitamin C is sensitive to light and air. Use vitamin C serums in the morning. Hyaluronic Acid: Hyaluronic acid is a star in the skin-care scene, and for good reason. So, can you use niacinamide and vitamin C together? Kate Somerville +Retinol Vitamin C Moisturizer.

You can use vitamin C with retinol, but be cautious. “When exposed to these factors, it becomes oxidized to dehydroascorbic acid, which is less stable and less efficacious,” Dr. Hogan explains.

What Is Ferulic Acid?

True Story: This Budget Vitamin C Serum Lightened My Dark Spots in Just 3 Weeks Your Skin Might Actually Need Ascorbyl Glucoside, Not Vitamin C A recipe for homemade serum can vary, but for best results, ensure your vitamin C  concentration is between 10–20%. Anything you may have read that says otherwise is based on outdated research that doesn't translate to a real world scenario. “Serums have the highest concentration of active ingredients, and they have smaller molecules, which allows actives to penetrate further.”. Licorice Extract Can Fade Dark Spots, According to Dermatologists

That being said, introducing new skin-care products and ingredients into your routine isn’t always easy.

Vitamin C and HA products can be used separately or can be found together in one skin care product.

And combining them not only isn't a problem, it's actually a great move in your quest for for a brighter complexion. Before we get to the potential issues that can arise when combining the two, it's important to understand what these ingredients are and what they can do for your skin on their own. “Especially if it is brown, I would say to toss it,” Dr. Lamb says.The most common way to get vitamin C in a skin-care routine is in a serum. Niacinamide is a form of vitamin B3 (also known as niacin) that is, "a wonder ingredient with a multitude of benefits," says Chicago dermatologist Okay, so we know combining the two isn't going to be problematic, but will it be beneficial? “A vitamin C serum will be most effective in delivering to the cellular level,” says Dr. Engelman. “In general vitamin C products should be applied in the morning before heading out for the day, when UV radiation is at its highest,” Dr. Hogan says.But vitamin C becomes less effective when exposed to light, so it’s important to give it time to absorb into your skin before going outside, The right moment to use your product depends on what kind of product it is, Dr. Hogan explains.

Unless your skin-care routine doesn’t go beyond using the most basic cleanser and moisturizer (in which case, sounds like it’s time for an upgrade), there’s already a strong possibility that you’re using vitamin C, retinol or hyaluronic acid to help keep your skin looking its best.