The kojic acid benefits extend beyond simple whitening
According to clinical trials and post-marketing surveillance, the most common gastrointestinal symptoms include nausea, vomiting, diarrhoea, constipation, abdominal pain, and bloating (also described as abdominal distension, dyspepsia, or flatulence in product information)
In short, it can help give you the appearance of having more hair overall
You might have more attacks within the first six months of starting them
Niger J Paediatr 38(4):165169 Obasa TO, Adesiyun OO, Mokuolu OA, Ojuawo AI (2012) Comparative analysis of glucose-6-phosphate dehydrogenase levels in pre-term and term babies delivered at University of Ilorin Teaching Hospital
Human trials show modest average effects