What color appears under a Wood's lamp for oily or acne-prone skin?

When examining skin under a Wood's lamp, various colors can indicate different skin conditions or characteristics. For oily or acne-prone skin, the key observation is that it typically appears as orange under the Wood's lamp. This color signifies the presence of excess oil and can also indicate areas with potential bacteria or follicular blockages, which are common in acne-prone skin.

In contrast, the other colors observed under a Wood's lamp serve different purposes. For example, purple can indicate certain types of pigmentation or aging skin, red may suggest conditions like infections or inflammation, and white often refers to dehydrated skin or the presence of certain pathogens. Each color gives a different insight into the skin's health, but for oily and acne-prone skin specifically, orange is the hallmark color to look for. This understanding helps in assessing skin conditions and determining appropriate treatment strategies.