I can give you the chemical breakdown based on Eden's ingredient list and what I know:
Water: Self explanatory
Propylene Glycol: a solvent, emulsifier, attracts water from the air (much like glycerin), and preservative. Used in MANY cosmetics (shampoo, toothpaste, makeup, baby wipes, etc), foods, drinks, livestock feed...Known as a skin irritant for some (never had a problem with it personally) and can have other negative affects but you should Google those if you want to scare yourself a little. I trust it over most stuff.
Hydroxyethylcellulose: Thickening agent that comes from cellulose (plant sugar). Used in many natural lubricants in the place of glycerin and other, less natural, thickeners.
Beta Vulgaris (Beet) Root Extract: Skin conditioner
Camellia Oleifera Leaf Extract: Astringent/skin conditioner derived from Camellia leaves
Dimethicone: A liquid form of silicone. Used in almost all silicone based lubes. Adds longevity to the lube.
Eugenia Caryophyllus ( Clove) Flower Oil: denaturant, fragrance. Kinda known for causing allergies. Used in this case to increase blood flow to the area and heighten sensitivity.
Glycerin: a humectant, which basically means it draws water from the air to make the product last longer/prevents drying out. A majority of women stay away from it because it's linked to yeast infections but I have never heard someone have a problem with it anally.
Honey Extract: Antiseptic, anti-inflammatory and soothes skin (much like normal honey). I use this in creams and lotions that I apply after shaving. Very safe.
Niacin: Also known as vitamin B3! Needed in your diet. But here it is used to increase blood flow to make the area more sensitive.
PEG-45M: Basically glycerin v. 2 without the fear of yeast infections (or it's not known for it).
Pyrus Malus (Apple) Fruit Extract: Skin conditioning
Rosmarinus Officinalis (Rosemary) Leaf Extract: Skin conditioning, frgrance.
Tetrasodium EDTA: preservative and known carcinogen...pretty nasty stuff. I wouldn't use anything that had it in it since it's VERY far from a natural ingredient.
Tocopheryl Acetate: A slightly synthetic form of Vitamin E. Very common in skin care/hair care products that aren't all natural. There is a more natural form of it that is much safer, but I use this one in many of my creams because I bought it without knowing. It less acidic than all natural Vitamin E, providing a longer shelf life. Vitamin E is muy bueno for the skin!
Triethanolamine: Most commonly used as a pH balance in creams, lotions, shampoos, shaving stuff, etc. Has had cases of skin irritation yet it's very low risk and not common.
Vanillyl Butyl Ether: skin conditioner. Vanillyl is a functional group (organic chemistry) and contains some pretty nasty chemicals! I'm not sure how safe this stuff is but I'm betting the "horror" of it has been pretty toned down.
Diazolidinyl Urea: Widely used preservative. Fairly safe, though I don't too much like it because we excrete urea in our urine as waste. Why try to put it back in there? GREAT preservative though, I have used it in lotions before (I think)
Sodium Benzoate: Another preservative.
Alright, so I'm not sure if any of these have any "tingling" affects. It seems like it doesn't but I dunno if a combination of these might create one or not. I only know the basics about these things from when I used to look up lotion/cream/massage oil stuff and from my basic knowledge in organic chemistry.
So my verdict? Stay away from it. Honestly, something that has this many "warning" chemicals is bad news for the prostate/body in general. Propylene Glycol is known for "breaking down" skin barriers (not in a gory way, just makes the skin more penetratable) and makes it easier for chemicals to be absorbed into the blood stream. So it's like, on top of making things go into the blood stream easier, it's bringing ALL these bad things with it.
Do a quick Google of Tetrasodium EDTA, Triethanolamine, Vanillyl Butyl Ether, and Diazolidinyl Urea.
Sorry to scare you, if you were considering buying it. Just my two cents. Knowing as much as I do about chemicals, everything scares me since it's not like once it's in the blood stream it leaves right away and can stick around for some time. Altering your own body chemistry. You can EASILY find a safer non-prostate lube and hope it goes better than these.
EDIT: to go with the topic, great idea but with a crappy ingredient list that I wouldn't put up the butt of my worst enemy.
