Severe case of ingrown hairs!, please help?

I have a severe case of ingrown hairs on my thigh I cannot wear a bikini Anymore. I have tried so many things to get rid of them for the last 5 years including Expoliances, hair and skin softeners. I'm allergic to wax. No matter What I do they seem to be coming back and that area always stays red.
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I do use tweezers that seems like the only way but leaves my skin incredibly damaged
Severe case of ingrown hairs!, please help?
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