Why is the formula table of skin care products very similar, but the efficacy is much worse?

The formula table of skin care products is very similar, but the efficacy is much worse. Although the formula table is similar, they use different proportions of products. The second is that the processing technology is also different. This leads to their different effects. Moreover, the different origins of the products they choose will also lead to great differences in the efficacy of skin care products. Moreover, the formula seedlings of products are sometimes not very accurate. There may be a difference in one or two main components, so the effect will be very different.