The Geek & Gorgeous 101 A-Game 10 Serum is a silky, lightweight emulsion containing 0.1% retinal. It helps combat signs of aging and fade dark spots. This retinal serum is the ideal choice for experienced retinoid users. The Geek & Gorgeous A-Game 5 is the perfect alternative for beginners. The Geek & Gorgeous 101 skincare line is the ideal introduction to the Geek & Gorgeous range. It focuses on scientifically based formulations with highly effective ingredients. Skin type: All skin types, especially suitable for oily and combination skin.