Can radiofrequency (RF) beauty devices thin the skin?

Over the past two years, radiofrequency (RF) beauty devices have surged in popularity for skincare. But do they truly improve skin health? Could they even cause skin thinning? Details are as follows:

Radiofrequency (RF) technology delivers controlled electrical current to generate thermal effects within the skin tissue. Following this controlled thermal injury, the body initiates a natural healing response: epidermal basal cells at the wound margins proliferate and migrate to repair damaged areas, while dermal fibroblasts are stimulated to synthesize new collagen and elastin fibers—resulting in skin rejuvenation. However, RF beauty devices carry certain potential side effects.

If excessive energy is applied, treatment duration is too long, or intensity is too high during operation, persistent erythema (redness) or post-inflammatory hyperpigmentation may occur.

Facial contour collapse may also develop—characterized by necrosis or chronic tissue necrosis occurring concurrently with new epidermal cell proliferation. This primarily results from excessive RF power output, which can thermally damage sebaceous glands in the epidermis. Once damaged, these glands cannot regenerate, leading to progressive atrophy and widespread facial tissue collapse—causing severe tissue injury.

Thermal burns may likewise result in scarring, mainly due to improper device handling during focused RF application, causing inadvertent epidermal thermal injury.