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Its lightening properties make it a popular option for those battling with uneven pigmentation
Moreover, it may aid in skin brightening by reducing melanin production, which can help fade dark spots
After a first complete cycle, the most common patient observation is the cellular turnover effect
Read more: Vitamin B12 Shots- Side Effects Itchy Skin Patches from Vitamin B12 Shots Sources: Vitamin B12 Injections Side Effects Tips to ease injection site soreness A Guide to Post-Injection Muscular Pain Image courtesy of David Castillo Dominici/freedigitalphotos
Its evidence base is older, limited, and genuinely conflicting, with no robust modern human trials establishing efficacy for sleep or any other use
