The “A-Team Duo” from Skin Better Science makes either a great travel size or trial size of two of their best-selling products, the Alto Defense Serum and the AlphaRet, available in a .5 ounce size. The Allure Best of Beauty Breakthrough award-winning duo from Skinbetter Science is designed to protect your skin from the effects of daily oxidative stress and correct the appearance of lines, wrinkles, uneven texture and discoloration.