The serum has 23% vitamin C, which is one of the highest concentrations on this list. It’s also rich in vitamin E and ...

Store your serum away from the sun and don’t hoard it — this unstable ingredient is best used quickly. “Many worthy topical ...

Unlike moisturizers or hydrating serums, vitamin C is a notoriously unstable ingredient, and it requires careful storage to remain effective. If you’re investing in a quality serum (and some of ...

Plus, “In a serum format, the molecular structure ... Garshick notes that vitamin C is considered a highly unstable ingredient, especially in its purest form, L-ascorbic acid.

unstable in sunlight and air (oxidizes) and is tricky in formulation; this results in the different qualities of vitamin C serums.” However, while the e.l.f. SKIN serum doesn’t contain L ...

This vitamin C serum is crafted with skin-loving ingredients ... kojic acid Since vitamin C is an unstable ingredient, meaning it loses its strength each time it’s exposed to air, heat, or ...

Before we delve into how to make your own serum, it's important to understand why vitamin C is so beneficial for the skin. This potent antioxidant neutralises free radicals, which are unstable ...

Vitamin C serum is a beloved staple in many skincare routines, known for its brightening, anti-ageing, and antioxidant properties. However, some users experience unexpected dryness after ...

Plus, vitamin C serum is known for its ability to reduce hyperpigmentation and brighten the complexion, resulting in a more radiant appearance. Benefits of vitamin C serum Here are some notable ...

A good vitamin C serum can supercharge your skincare routine thanks to its tightening, smoothing and brightening benefits. Based on thorough research, long-term testing by Forbes Vetted editors ...

But with so many options on the market, choosing the best vitamin C serum can be overwhelming—especially when each promises to deliver glowing, youthful skin. To help you find the most effective ...