Phthalates are a group of substances used as plasticizers in plastics. Within the EU, four of them—DEHP, DBP, BBP, and DIBP—are classified as reproductive toxicants and restricted under the REACH regulation. Under Regulation (EU) 2018/2005, products that contain the four phthalates at a concentration of 0.1 weight percent or more of the plasticized material, individually or together, may not be placed on the market after July 7, 2020.
The regulation justifies the restriction, among other things, by saying that exposure can occur when products come into contact with skin and mucous membranes. It lists PVC, polyurethanes, and several other polymers as plasticized materials. For electrical equipment, such as vibrators, the RoHS directive applies instead, which limits the same four phthalates. Both We-Vibe and LELO refer in their EU declarations to RoHS.
Three things are good to know. First, the EU rules apply to products sold within the EU; if you buy from other markets, you have to rely on the information from the manufacturer and the seller. Second, the rules limit four specific phthalates—“phthalate-free” on a package is a broader claim that only the manufacturer can stand behind. Third, phthalate-free doesn’t say anything about porosity: a phthalate-free TPE toy is still porous.
Silicone, glass, metal, and hard ABS need no plasticizers at all. That’s why these materials are the safest choice if you want to avoid the question entirely.