<unk>  has little percutaneous absorption and little systemic effects, therefore it is considered relatively safe. A mouse study shows that it does not increase the probability of promoting skin cancer. Studies done in vitro show that it is not photomutagenic. Because<unk>  is an acid it needs to be neutralized in order to be used without offsetting the final pH of the sunscreen too much. Usually this is done with triethanolamine.
Ecamsule
Corpora arenacea
Keratoconus
Linea alba 
Kerion
Aromaticum rosatum
Cutaneous horn
Dermatophyte