Yes, but avoid saunas / steam baths for a few days. Yes, you’ll be able to wear makeup immediately after the session. Yes, you can go in the sun provided you wear a high-level SPF filter suitable to your skin type. Be aware that PRX-T33 TCA/H2O2/KOJIC Perfect Intense Liquid may thin your epidermis, making it tan quicker but also more prone to sunburn. PRXT33 TCA/H2O2/KOJIC Perfect Intense Liquid is non-photosensitising.