I would never bother with skin lightening/whitening but being honest I don’t think it’s fair to judge those who do.. It’s a bit two-faced to say they’re insecure or not happy with what God gave them when a lot of us ourselves play around with hair colour, coloured lenses, have nose jobs, boob jobs or whatever.. Maybe they don’t want to look white white but just a little lighter, the same as a lot of westerners (inc myself) like to look browner..
Regarding the safety issues there are clinics and beauty salons in the Far East that do dodgy facial fillers or their own made up kind of botox or even silicone injections straight into the chest for an injectable boob job.. doesn’t mean the whitening injections themselves are unsafe (when the person doesn’t go overboard), just that anyone considering it should go to a doctor/nurse who knows what they’re doing..
In terms of safety if done by a reputable practitioner they are far far safer than many of the skin whitening creams that contain mercury, high levels of hydroquinone etc. which has obviously led to a lot of them being banned in most western countries (inc the UK). There is no such ban on Glutathione or Vit C injections, on the contrary when they are done correctly there are actually benefits..