To buy: $22 (was $30); amazon.com. Another reviewer fell head over heels for the TruSkin Naturals serum after experiencing noticeable results in five days. They explained, “my lines are gone, skin is shining, red spots, irritations, everything is gone!” After working the serum into their skincare regimen, they noticed “baby soft” skin that looked healthier in days. The editor-approved serum can be used day and night to even out skin tone, soften wrinkles and fine lines, promote collagen, boost radiance, soothe skin, and reduce the appearance of dark circles. TruSkin Naturals recommends applying three to five drops at least once daily, followed by moisturizer for best results. A variety of skin types, including oily, combination, sensitive, dry, and normal skin, can benefit from vitamin C as well as light and deep skin tones. The serum is also cruelty-, paraben-, and fragrance-free.