The secret to ensuring your tattoo stays in its best condition is proper aftercare, which includes keeping your fully-healed tattoo hydrated. Timing for after care varies based on the tattoo artwork's detail and size, but tattooed skin will typically heal within 2-4 weeks. When the tattooed skin has fully healed, use a non-scented, hypoallergenic lotion to avoid further irritation and help skin retain moisture.