One of the more obvious reasons why glass dildos are a well-hidden secret among the sexually adventurous is because smooth glass equals smooth penetration and an almighty orgasm. Even twisted or curved glass dildos with ridges are smoother than most plastic or silicone dildos, with natural secretions running straight over their surface to make for a sweet 'n' slippery ride.
The majority of glass dildos are made from high-grade Pyrex, which is a durable, safe, sturdy material that can be heated up or cooled down in your fridge or freezer for intense variations in temperature. Any colours used to maximize the beauty of a glass dildo will be produced from non-toxic materials and, in most cases, FDA approved to ensure ultimate safety.

As we've mentioned above, a well-cared-for glass dildo will last a long time. Unless you accidentally chip them, the surface of your glass dildo is unlikely to present any problems to you or your lover's vagina or (if it's a flared-base dildo) your anus.
Lots of women are guided by the misconception that glass dildos will shatter inside them if shafted too hard or if clenched too tightly by their PC muscles. Unless you're Supergirl, you'd have to work damn hard to get anywhere near breaking your glass dildo whilst it's inside you or your partner. Having said that, unnecessary force is a big no-no with any type of sex toy.
As part of your sex toy cleaning regime, get into the habit of inspecting your glass dildo for nicks, cracks or chips after each use to prevent any tiny cuts or lesions to you or your partner's skin. If you're planning on using your glass dildo for anal sex, always ensure it has a flared base for easy retrieval.

Glass dildos are both functional and extremely beautiful to look at, so it's no surprise that many women feel unashamed to leave them out on their bedside table as an ornamental feature as well as a slinky sex toy. Besides using flared-base glass dildos for anal sex, general glass dildos are a must-have for smooth hand-guided penetration.
Unlike other materials where you can only achieve a certain amount of temperature variation through using cooling or warming lubes, glass dildos can be heated up or cooled down to your liking. Varying the temperature of a glass dildo on your clit and during penetration intensifies orgasms beyond belief.