Gel Based Sunscreen Containing Surface Modified TiO₂ Obtained by Sol-Gel Process: Proposal for a Transparent UV Inorganic Filter

Table 1

Sunscreen formulations developed varying components and concentrations (%).

Formulations	% TiO2 P0.05H1	% commercial TiO2	% Carbopol 940 (2% dispersion)	% H2O
Formulation 1	2.5	—	10	87.5
Formulation 2	5		20	75
Formulation 3	10	—	25	65
Formulation 4	15		40	45
Formulation 5	20	—	45	35
Formulation 6	25	—	50	25
Base formulation	—	—	50	50
Commercial TiO2 formulation	—	15	50	35