We used it for vaginal sex with Indigo and Maskulan condoms. On first use, there was a slight burning for about 5 seconds, as any lubricant will find micro-abrasions. But then only pleasant sensations and no unpleasant after-effects. I can hardly imagine sex without lubricant.
This is the best lubricant we have ever used. It causes no skin irritation, leaves no residue, and has no harsh odor. I ordered it on the website with cash on delivery. The package arrived on the third day, and it was nice that it included sample gifts inside. Well done!