Face Serums Explained: Niacinamide, Hyaluronic Acid & More

Face serums are lightweight products designed to deliver specific ingredients. They can be useful, but you do not need several at once.

The best serum is the one that matches a clear skincare goal and fits comfortably into the rest of your routine.

Hyaluronic acid serums for hydration

Hyaluronic acid is commonly used in hydrating skincare. If hydration is your main goal, compare the The Ordinary Hyaluronic Acid 2% + B5 and apply according to the product directions.

Niacinamide serums for a simple targeted step

Niacinamide is used in many formulas aimed at oiliness, uneven-looking tone and general barrier support. One BeautySift option to compare is the The Ordinary Niacinamide 10% + Zinc 1%.

Vitamin C serums

Vitamin C formulas vary in ingredient form, concentration, texture and packaging. Compare the exact formula rather than assuming all vitamin C serums work the same way.

Retinoid serums

Retinoids are widely used for texture, signs of aging and acne, but they can be irritating and are not appropriate for everyone. Start slowly and follow the label. People who are pregnant, trying to become pregnant or breastfeeding should check with a healthcare professional before using retinoids.

Salicylic acid and breakout-prone skin

Salicylic acid is commonly used for clogged pores and blemishes. Stronger is not automatically better; frequent irritation can make a routine harder to maintain.

How to choose a face serum

• Choose one main goal first.
• Compare the complete formula, not just the headline ingredient.
• Introduce one new serum at a time.
• Follow product directions and reduce use if irritation develops.
• Keep cleanser, moisturizer and sunscreen as the foundation of the routine.

How many serums do you need?

Often, one is enough. If you decide to use more than one active product, introduce them gradually rather than adding several at once.

Where does serum go in a skincare routine?

In a typical routine, serum goes after cleansing and before moisturizer. In the morning, sunscreen comes last. See our skincare layering order guide for more detail.

Frequently asked questions

Can beginners use niacinamide?

Many people use niacinamide, but tolerance depends on the formula and individual skin. Introduce it gradually and follow the label.

Do I need both hyaluronic acid and niacinamide?

No. Choose products based on your main goal rather than trying to include every popular ingredient.

Should serum replace moisturizer?

Usually not. Serums and moisturizers serve different roles in a routine.

Build a simple routine

If you are starting from scratch, begin with our skincare routine for beginners. You can also browse BeautySift skincare picks.

Editorial note: BeautySift may earn a commission from qualifying purchases through affiliate links. Product suggestions are general information; check labels and individual needs before use.