Most lasers and IPLs _____ be used on tanned skin or skin that has had recent sun exposure.

When engaging with laser and intense pulsed light (IPL) treatments, it is crucial to consider the skin's condition prior to the procedure. The correct answer highlights that most lasers and IPLs cannot be used on tanned skin or skin that has been recently exposed to the sun. This is due to the increased melanin levels in tanned skin, which can lead to a higher risk of adverse effects, such as hyperpigmentation, burns, or scars.

Additionally, these light-based treatments rely on contrast between the skin and the target area (like hair follicles or pigmented lesions). When the skin is tanned, it can absorb more light energy meant for the target, which reduces efficacy and increases risk. It is generally advised to wait until the skin returns to its natural tone before undergoing these treatments to ensure safety and optimal results.