Which is safe for superficial pigmentation: 532nm or 1064nm? (photos)

Had 532nm ndyag laser done on me for my light pigmentation and freckles on midface for the first time. Immediately post laser had mild redness and circumferential urticaria at laser-treated areas. After 1 week scabs came off. Noted treated areas become slightly hypopigmented than normal skin. Question is; doctors said 532nm is good for freckles but some said better to go for 1064nm as it is safer. Any enlightenment ?

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