1oz. The Ordinary Niacinamide 10% + Zinc 1% Smoothing Skin Serum

Amazon has 1oz. The Ordinary Niacinamide 10% + Zinc 1% Smoothing Skin Serum on sale for $4.62. Shipping is free with Prime or on $35+ orders. Note, product will be sold/shipped by Amazon. Product is eligible for Subscribe & Save as an alternative shipping option Features: Niacinamide 10% + Zinc 1% visibly improves skin radiance and smooths texture in one week. Lightweight water-based serum that reinforces the skin barrier and provides hydration in as little as 7 days. High 10% concentration of Niacinamide (Vitamin B3) and 1% Zinc PCA to help control oil in 3 days. Clinical testing shows appearance of pores is minimized in 4 weeks, improving signs of congesting.