An analysis of whether hydroquinone and glycolic acid can be used together
Various things in the world, used together, or complement each other, or contradict each other. Whether hydroquinone and glycolic acid can be used together needs to be explored in detail.

Hydroquinone is effective in skin whitening. It can inhibit the activity of tyrosinase and block the production of melanin, so it is often used by those who seek fair skin. Glycolic acid, a type of fruit acid, can exfoliate, promote skin metabolism, and make skin renewed, smooth and shiny.

If the two are used together, there may be a synergistic effect. Glycolic acid makes the stratum corneum thinner, increases the permeability of the skin, and hydroquinone may be easier to enter the skin, enhancing its whitening power. However, there are also risks. Both are irritating to the skin, and the same use may cause excessive irritation. The skin may be red, swollen, tingling, and itchy, especially those with sensitive skin, and more caution is required.

And hydroquinone has certain toxicity. Excessive or improper use can cause exogenous brownish and yellow disease. Combined with glycolic acid, or increase this risk.

In summary, although hydroquinone and glycolic acid may have synergistic benefits in theory, the risk of combining them is also high. If you want to use it, consult a professional, such as a dermatologist. According to your own skin condition, weigh the pros and cons, it is appropriate, and you must not use it rashly, causing skin damage.