What sets Isle of Paradise Hyglo Self-Tan Serum (£22) is the fact it's vegan and cruelty-free, formulated with a vegan hyaluronic acid molecule to help your skin retain moisture and keep it looking plump. Developed by celebrity tanning expert Jules Von Hep, this gradual self-tan serum is also incredibly hydrating, because in addition to HA, it also contains avocado, coconut, and chia seed oils that will leave your skin glowing and help your faux glow last and last. But don't let the whole super moisturising thing worry you; the Hyglo Serum is very lightweight and supremely gentle on sensitive skin types.