Is it possible that hypopigmentation from a laser gets worse and white areas get bigger after more than 15 years?

is it possible that hypopigmentation from a laser gets worse and white areas get bigger after more than 15 years ? how can i stop this ? i heard some people tatoo the hypopigmented skin to match the rest of their skin, is that safe ? can that work ? one more question can hypopigmentation turn into vitiligo ? thanks in advance any can of procedure or help for hypopigmentaton ?

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