Are there toys that guys can use for masturbation and how do they work?

Recently I have discovered if I change the settings on my shower head so the water pressure is harder and faster it works wonderfully as a tool for masturbation. My question is, is there any health risks for using water for self pleasure? My main concern is getting water in my vagina...could that cause issues? Thank you so much!

Recently there have been creams for women sold over-the-counter to improve sexual enjoyment for women. Are these lotions safe for women and the men who love them, and do they work? I am familiar with a particular lotion called "Viacreme."

My girlfriend and I like to drip hot candle wax on each other. Is that safe? Can there be any damage or anything? I wouldn't exactly want anything bad to happen to either of us down there... Thanks!

When was the first dildo invented and what was it originally used for?

My problem is about vaginal dryness. I am an otherwise healthy twenty-one-year-old female, but cannot seem to get wet enough for pleasurable sex with my husband. We both get sore afterwards and I feel like I am not "performing" much like I would imagine a man would feel if he couldn't get an erection. Here's the thing, my husband doesn't want me to use artificial lubricants. Honestly I don't either. Are there any alternatives to K-Y? Is dehydration or draining enough fluids a factor? Any info would be of much help. Thanks so much.