The best IPL's are very effective in treating Lentigos. The most effective IPL ever made was the VascuLight made about ten years ago by ESC and then Lumenis. The Quantum and Lumenis One are also and excellent IPL devices also made by Lumenis. Many of the newer IPLs...
Its common for it to take up to 3 weeks to see full shedding of the hair treated with IPL. However, as a skin type 3 - even with dark hair, IPL might not be the most effective hair removal method available to you. There are numerous alternatives that are more effective on darker skin...
As bad as the photographs look, it is possible to improve the outcome compared with no treatment. You should see a dermatologist who can examine your skin. Is this a second degree or focally third degree burn in some tiny areas? Will the post inflammatory hyperpigmentation reduce itself or...