Olay Niacinamide & Retinoid Duo $49 Free Shipping Get it at Olay Check it out Use the following coupon code at checkout and follow the instructions in the "How to get it" section on this page. BEST Copy Code has been copied to clipboard Something went wrong, try again. You'd pay more if you bought each cream separately. Brad's Deals Editor Laura, Details This Niacinamide & Retinoid Power Couple drops from $54.98 to $48.98 with promo code BEST at Olay.com. With free shipping, that's the lowest price we could find. Sales tax is charged in most states. Advertiser Disclosure How to get it Enter code BEST at checkout.