Even if you accidentally use conditioner instead of lube, there’s no way it will make the skin of your dick turn black and fall off. It’ll irritate your skin sure, but that won’t happen.
One of two things must actually actually be happening…
You’re using the conditioner lube to fuck something like sandpaper or a sex toy that is literally set on fire
You’ve confused conditioner with something like lye or hydrochloric acid
Even if you accidentally use conditioner instead of lube, there’s no way it will make the skin of your dick turn black and fall off. It’ll irritate your skin sure, but that won’t happen.
One of two things must actually actually be happening…
You’re using the conditioner lube to fuck something like sandpaper or a sex toy that is literally set on fire
You’ve confused conditioner with something like lye or hydrochloric acid
For the love of Christ, get your shit checked out