Chithunzi cha Photochromic ndi mtundu wa ma microcapsule. Ndi ufa woyambirira wokutidwa ndi ma microcapsule.Zinthu zopangira ufa zimatha kusintha utoto padzuwa. Zinthu zamtunduwu zimakhala ndi mawonekedwe amtundu wovuta komanso nyengo yayitali. Itha kuwonjezeredwa mwachindunji molingana ndi malonda oyenera.