Hyperpigmentation after dermal needling or fractional dermabrasion is very rare. Dermal needling is much safer in terms of potentially causing hyperpigmentation than fractional lasers. A 30% incidence of post inflammatory hyperpigmentation in darker skin types has been reported after fractional laser treatments.
The causes of hyperpigmentation include ultraviolet light or sun exposure, pregnancy, hormone treatment, drugs or inflammatory conditions.
Dermapen is an ideal therapy of dermal pigment disorders when used with lightening agents. Fabbrocini et al, 2011 found statistically significant improvement in 20 women with melasma, a form of hyperpigmentation, using dermal needling in conjunction with pigmentation serum.