The dressing aid from EROS was good for the beginning, but in the long run, it’s just too expensive for me. So, I started looking for a more affordable option for silicone oil. Buying just any random oil from the internet seemed too risky, as the oil is in constant contact with the skin while wearing latex, and I wanted to avoid any (potentially harmful) impurities.
After doing some research, I came across a supplier called Optimal-Products (their shop is here: optimal-products.de), based in Germany. I was able to buy a liter of silicone oil, advertised as a latex dressing aid, for under €20. Elsewhere, you’d pay that much for a 250ml bottle. The oil has made a good impression so far, and I regularly refill the smaller EROS BODYGLIDE bottle with it. They seem to sell stuff from their shop only to Austria, Germany and France - I don’t know if these limitations also apply if you buy their stuff via Amazon.
They sell their stuff via their own shop and via Amazon. I’ve bought only via Amazon from them, I have no experience regarding their own shop.