Protect Your Large Body Tattoos With Treated Clothing For protecting larger tattoos, washing your clothes with Rit Sun Guard Laundry Treatment UV Protectant (£4), Mariwalla says is really important. "If you have a large body tattoo that is under a shirt, [you can't] rely on the shirt for sun protection alone," she said, "[Washing] the shirt with RIT Sunguard makes everything SPF 30." Image Source: amazon.com