Quick answer

Water-based lube is the safest and most versatile choice for both silicone and TPE attachments. It won't degrade the material, rinses off easily, and works with all toy types. Avoid silicone-based lubes with silicone toys and oil-based lubes with TPE.

Why material compatibility matters

Silicone and TPE (thermoplastic elastomer) are porous materials that can react with certain lubricants. Silicone-based lubes can bond with silicone toys, causing swelling, stickiness, or permanent damage. Oil-based lubes can break down TPE, shortening its lifespan. Water-based lubes are chemically inert and safe for both materials, making them the go-to choice for most sex machine attachments.

How to choose the right water-based lube

Look for a water-based lube that is labeled as body-safe, hypoallergenic, and free from glycerin or parabens if you have sensitive skin. A pump bottle or flip-top cap makes application easy during use. For sex machines, a slightly thicker water-based lube can provide longer-lasting glide without dripping off the attachment.

Decision rules for choosing lube

  • If you have silicone attachments: Always use water-based lube. Silicone-based lube can ruin silicone toys. Water-based is the only safe choice.
  • If you have TPE attachments: Water-based lube is safe. Avoid oil-based lubes as they can degrade TPE over time. Stick with water-based for longevity.
  • If you want a multipurpose lube: Choose a water-based lube that works with all toy materials and partner play. One bottle covers all your needs.

Product highlights

  • Mood - Lube - Water Based: A great multipurpose water-based lube that can be used during sex with a partner, and with any type of material and toys. Part of the popular line of Mood Lubes, Proudly Made in America exclusively by Doc Johnson. You'll always be in the Mood once you've used these pleasure potions, each packed in a stylish 4 oz. pump bottle. This lube is explicitly safe for all toy materials, so you can use it with both silicone and TPE attachments without worrying about damage. The pump bottle makes it easy to apply directly to the attachment or your body.
  • Doc Johnson Vac-U-Lock Adapter for Motorbunny BUCK: The Doc Johnson Vac-u-Lock Adapter for Motorbunny BUCK turns the world's only power-vibe/thruster into the most versatile sex machine on the planet! Designed in close collaboration with Doc Johnson, this attachment adapter lets riders choose from hundreds of Vac-u-Lock-compatible toys to enjoy with Motorbunny BUCK's signature thrusting actions! With this adapter, you can use a huge variety of Vac-u-Lock attachments made from different materials. A water-based lube ensures every new attachment glides smoothly and stays compatible, no matter the material.

Who should use water-based lube?

Best for

  • Anyone with silicone or TPE attachments
  • Users who want a single lube for all toys and partner play

Not ideal for

  • Those who prefer long-lasting lube for extended sessions without reapplication (consider hybrid lubes instead)