Which of the following is a common complaint clients may have after waxing?

Redness and irritation are common complaints clients may experience after waxing due to the nature of the hair removal process. Waxing involves pulling hair out from the root, which can cause temporary trauma to the skin. This trauma often results in localized inflammation, leading to redness and irritation in the treated areas. The skin may become sensitive as a reaction to the wax and the pulling action, especially if the skin is not adequately prepared or aftercare is not followed.

In contrast, while other issues like streaking of the skin or excess moisture might occur under specific circumstances or with certain products, they are not as typical as redness and irritation following waxing. Infrequent hair growth is not a complaint associated with waxing; waxing usually leads to faster regrowth compared to other methods like shaving. Therefore, understanding the expected reactions post-waxing, including redness and irritation, is crucial for both the waxer and the client in managing post-treatment care effectively.