Sarah McKibbin|Skin Therapist on Instagram: "Medik8 Retinol 3TR - $75. The perfect starter retinol serum for those sensitive skins 🖤 Reveal a more youthful appearance with this lightweight Intelligent Retinol (vitamin A)
Medik8 Retinol 3TR Advanced 0.3% Vitamin A Serum, 0.5 oz - Walmart.com