You can use face serum twice a day—before your moisturizer—but reserve products with retinol for nighttime. “Generally, most people should be using a treatment serum twice day,” says Hirsch.
While it's all down to your skin (and no one knows your skin better than you), most prefer to apply vitamin C serums in the morning because of its antioxidant properties—which means that it helps to defend against pollutants and free radicals that could otherwise damage skin throughout the day.
One of the most crucial benefits of a serum is enhancing and accelerating cell turnover. Using a serum at night takes advantage of the body's natural repair time. Sleep is when cells go into regenerative mode. You want to support and enhance this natural process.
You can use face serum twice a day—before your moisturizer—but reserve products with retinol for nighttime. “Generally, most people should be using a treatment serum twice day,” says Hirsch.
Your body undergoes its natural repair process while you're asleep, and the vitamin C will make its strongest impact on your skin during this time. It'll also absorb into your skin most effectively after you've cleansed and exfoliated, so it makes sense to apply it during your nighttime routine.
A Vitamin C serum should be used in your bedtime routine and a couple of drops of it should suffice. Tap it on your skin using your fingertips and leave it on overnight. Wash your face in the morning and apply SPF to avoid any skin irritation.
"Because vitamin C serum helps protect your skin from free radicals, most dermatologists have recommended applying it in the morning to prevent damage during the day," says Joshua Zeichner, the director of cosmetic and clinical research at Mount Sinai Hospital in New York City.
How often can you use it? It's always best to follow specific product instructions and to start off slowly. Generally, though, you can safely use hyaluronic acid both morning and night.
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.
In general, it is best to apply serum before moisturizer. This gives the active ingredients in the serum the best chance of working. Otherwise, the best order and time of day for a skin care routine depends on the products' ingredients and the person's goals.
If there's one skin-care ingredient that puts you in the fast lane to hydrated skin, it's hyaluronic acid. You'll find it as an active ingredient in seemingly every skin-care product category under the sun — serums, cleansers, moisturizers, and more.
Unlike other skincare products like thick face creams and moisturizers that you massage into your skin in an upward direction, serums are meant to be applied to your face in small tapping motions with your fingertips or your palms. Do not rub your skin excessively, let the serum absorb into your skin on its own.
Good (Skin) Days C's The Day Serum
Vitamin C moisturizers are also becoming more common, Dr. Lamb says, and you'd want to use those at the end of your skin-care routine. And if you're wondering if you can use vitamin C every day, the answer is yes.
One study even recommends applying a vitamin C serum every eight hours, or twice daily for the pinnacle of protection. Vitamin C has photoprotective properties and staves off oxidative stress from the free radicals we meet throughout our day.
If you are applying a Vitamin C serum and hyaluronic acid separately, it's suggested that you apply the Vitamin C first, and then add the hyaluronic acid afterward in order to help fortify the skin barrier and lock in the moisture.
The main difference between Vitamin C Serum and Hyaluronic Acid Serum is the basic functionality of the compounds. Vitamin C shall protect you from skin damage, while Hyaluronic Acid Serum helps your skin retain moisture. For effective results, these both are combined to give desired results for your skin.
Hyaluronic acid is best if they're looking to moisturize dry skin, while retinol works better by encouraging better skin by boosting collagen production. They have several benefits that can work in tandem for better results, though patients need to be careful with the exact formulations they use.
“Hyaluronic acid plays well with most ingredients, while caution must be taken when using retinol in combination with alpha hydroxy and beta hydroxy acids, benzoyl peroxide, and some types of vitamin C.” Linkner echoes the tip about avoiding vitamin C.
To allow serums to fully absorb, apply and wait 5 minutes before moisturizing. Take note: Well-formulated serums absorb quickly and disappear into your skin. If they leave an oily or sticky residue, they're not doing their job well. 5.
Serum and Moisturizer: 1 minute
Goldenberg's go-to recommendation for timing between serums and moisturizers is about one minute. This wait has the same reasoning: Sixty seconds — give or take — gives each product a moment to delve into your pores.
If all your products (serum, moisturiser, sunscreen etc) already have their fair share of antioxidants, you don't need an extra toner too. Dry skin: If your skin feels tight and dry during the day, you skin needs more moisture. You can either opt for a hydrating toner or a richer moisturiser. It's up to you.
Serums go first
As a rule, serums should be the first products that touch your skin after cleansing and exfoliating in order to get the best results. Never apply them after your moisturizer as thicker creams and oils create a protective layer over your skin and hinder absorption.
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. As for benzoyl peroxide and retinol, they cancel each other out.