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We need to know spot size, joules and pulse width numbers in order to judge settings. It’s a combination of all three. I would guess 40 is the joules, but you need to ask for the rest.
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It’s too early to judge anything at this point. You need to wait 3 weeks for all the treated hair to shed. Whatever doesn’t shed by the 3 week mark should be retreated at no cost as that hair was missed. This is absolutely necessary on this area in order to avoid patchiness. They should also be overlapping well when treating to avoid patchiness as much as possible (so overlapping by at least 10% when treating the area).
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No, IPL is not going to help you. You are using a good machine. As long as the settings are good and they’re overlapping well, this is your best shot. You can’t speed up hair cycles. Hair grows in cycles, so you have to treat, wait for shedding, wait for new hair from the next cycle to grow in, then treat again. You repeat this around 8 times every 8-10 weeks or so on this area until all the hair from all cycles is killed. It’s likely that you won’t get 100% removal, but you can get close to 80-90%. You can judge how you feel about the reduction after 4-5 treatments and decide whether you need more or if you’re ok with the more sparse growth at that point which will be a lot easier to shave.
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The first couple treatments are the worst and have the worst reactions. This will improve as the hair gets less dense and coarse.
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Icing after the treatment should be help with redness. Also keep the area clean and dry as much as possible to reduce any side effects such as whiteheads.