Fig 6. Protective effect of non-toxic dose (50 μg/mL) TA extract in Hs27 skin fibroblasts against the toxicity of beauty products.

(a) Pre-treatment of Hs27 skin fibroblasts for 24 h with non-toxic dose (50 μg/mL) of TA extract, followed by treatment with varying doses (62.5, 125, 250, 500 μg/mL) of beauty (lipstick) products for 1 h to evaluate the percent cell viability. (b) Pre-treatment of Hs27 skin fibroblasts for 24 h with non-toxic dose (50 μg/mL) of TA extract, followed by treatment with varying doses (62.5, 125, 250, 500 μg/mL) of beauty (lipstick) products for 4 h to evaluate the percent cell viability. The data presented here is based on experiments done in triplicate and the mean value of ± SE. The p-value less or equal to 0.05 was considered to be statistically significant, *p ≤ 0.05, **p ≤ 0.01.