What temporary hair removal service is a painless method that dissolves hair at skin level?

The correct choice, which describes a temporary hair removal service that is painless and works by dissolving hair at skin level, is the use of a chemical depilatory. Chemical depilatories contain active ingredients, usually alkaline substances like calcium thioglycolate or sodium hydroxide, which break down the protein structure of the hair, allowing it to be wiped away easily from the skin's surface without causing pain.

This method contrasts with the other options cited. Waxing, for instance, involves applying a sticky substance to the skin and then removing it, which can cause discomfort as it pulls hair out from the follicles. Shaving involves cutting the hair at skin level but can lead to nicks, cuts, or irritation, especially for those with sensitive skin. Tweezing is a method that involves plucking individual hairs from the follicle, which can be painful and time-consuming, particularly in areas with a high density of hair.

In summary, chemical depilatories provide a painless and efficient means of hair removal by dissolving hair just at the skin level, making this method unique among the options presented.