- Excessive Sebum Control-Enlarged Pore Tightening-Dark Pore Brightening[Tiam] Pore Minimizing 21 SerumSKU: PCCS-T-1160,00Â TTDPrecioShipping & Payment InfoSize*ElegirCantidad*Agregar al carritoRealizar compraPRODUCT INFO- Less oiliness, less visible pores Niacinamide 20%, Natural BHA (Willow Bark), Zinc PCA 1%SUGGESTED USE1. Take an appropriate amount and apply evenly over the face after toning. 2. If using in the morning, please wear SPF and patch test before.