What is the purpose of a Woods lamp?

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A Woods lamp uses ultraviolet light with a filter to make certain skin conditions fluoresce, helping you see fungal infections and pigment changes that aren’t obvious in normal light. This fluorescence-based identification is why it’s used as a diagnostic aid in esthetics and dermatology. It’s not a heating device, it doesn’t measure skin moisture, and it isn’t a tool for sterilization; its purpose is to illuminate and reveal conditions through fluorescence.