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2025-08-14 05:25
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Although cosmetics are not meant for consumption, there are concerns that titanium dioxide in lipstick and toothpaste may be swallowed or absorbed through the skin.
Fig. 5. ROS values (Abs of NBT) in samples of MSSA treated with A: 0.2 mg/mL P25TiO2NPs; B: 0.02 mg/mL P25TiO2NPs; C: 0.2 mg/mL VitaminB2@P25TiO2NPs; D: 0.02 mg/mL VitaminB2@P25TiO2NPs after 3 h of irradiation (red) and 6 h (blue). SD < 0.20 and p < 0.05 between C-D and A-B.
Until relevant toxicological and human exposure data that would enable reliable risk assessment are obtained, TiO2 nanoparticles should be used with great care.