Skinstore now offers $71 GWP with $200 SkinCeuticals Purchase! Spend $150 and receive a Free Phloretin CF Sample, worth $23, no code needed. Spend $200 on SkinCeuticals and receive a free 3-piece SkinCeuticals GWP, worth $48, when you enter code EXTRASKINC. 3-piece GWP content: Glycolic 10 Renew Overnight Treatment 4ml (worth $12), Phloretin CF (worth $23), Discoloration Defense 4ml (worth $13).