For those of us who want the best, strongest and most effective ingredients, retinol is an absolute must. And while you can ...

The Ordinary’s new serum claims to address signs of ageing – but does it work? - The formula’s hero ingredient is set to make ...

Its main active ingredient is L-ascorbic acid (it comprises 15 percent of this serum), and despite the high concentration of pure vitamin C, it is stable and easily penetrates the skin.

Have been using for 5 months and will continue to do so.” — Kindle customer This serum has an very high 20% concentration of ...

Thousands of Amazon shoppers and a PEOPLE editor’s 56-year-old mom swear by the $35 Vichy Vitamin C Serum. This serum ...

When it comes to achieving bright, glowing skin, a vitamin C serum is key. But not all vitamin C serums are created equal—and ...

A product with too high of a concentration—or incorporating multiple ... types Just three to four drops of this mega-moisturizing serum twice a day is enough to replenish and revitalize dull ...

With 15 per cent vitamin C – stemming from 3-O-ethyl ascorbic acid – and five per cent polyhydroxy acids (PHA’s) stemming from fruit acids, this serum works to instantly brighten and boost skin for a ...

More than 5,600 Amazon shoppers have given Bliss Bright Idea Vitamin C + Tri-Peptide Facial Serum a five-star rating, with many highlighting the pleasant scent and texture of the serum as well as the ...