Identify one contraindication for facials.

Active acne is considered a significant contraindication for facials due to the potential for irritation and the exacerbation of the condition. Facials often involve various products and techniques that can stimulate the skin, and when the skin is already inflamed or compromised due to active acne, these treatments can aggravate the situation. This can lead to increased redness, swelling, and the potential for more breakouts or scarring.

In contrast, dry skin, while it can affect the type of facial treatment chosen, does not contraindicate receiving a facial. Minor allergies may warrant caution but do not automatically rule out facial treatments if addressed appropriately. Pore size is a characteristic of the skin and does not directly impact the suitability of facial treatments. Thus, treating active acne requires careful consideration and often different approaches to skincare, making it crucial to avoid standard facial treatments that could worsen the condition.