I've seen plenty of people bathe with Dettol. It didn't harm them. I'm not sure it would have any long-term effects, but I don't know 100%. Everybody is different, but I've never heard of anyone having anything bad happen to them from using it often or using it long-term.
Edit: The amount should be small though and diluted, as it is very strong. I did see that you had a reaction t it though. Have you tried the African black soap?