Do laser treatments for pigmentation spots cause rebound effects?

Feb 13, 2025 Source: Cainiu Health
Disease description:

Xiao Zhang is a 25-year-old woman who has recently been considering laser treatment to remove freckles on her face. She is concerned about whether the freckles might return after undergoing laser freckle removal.

Doctor's answer (1)
Dr. Chen Lu

It is possible for pigmentation to rebound after laser spot removal; however, reinforcing daily skincare and taking proper preventive measures may help reduce the likelihood of recurrence.

Laser spot removal treats pigmented lesions such as freckles, melasma, and sunspots by using high-energy laser beams to break down pigment, which is then absorbed or expelled by the body. If proper sun protection measures are not taken after laser treatment, or if the skin is exposed to ultraviolet radiation for prolonged periods, melanocytes in the skin may become active again, leading to pigmentation and a rebound effect.

To avoid recurrence after laser spot removal, it is recommended to strictly protect against sunlight, avoid activities under strong sunlight as much as possible, apply sunscreen with a high SPF when going outdoors, and wear protective items such as hats and sunglasses. After laser treatment, the skin is more sensitive and delicate, so gentle and non-irritating skincare products should be selected. Avoid using skincare products containing harmful ingredients such as hormones or heavy metals, which may damage the skin and trigger spot recurrence. Additionally, maintaining sufficient sleep, avoiding staying up late, keeping a balanced diet rich in fruits and vegetables while minimizing spicy and fried foods, and maintaining a positive mood while avoiding excessive stress are all beneficial for regulating hormone levels in the body and reducing melanin production.