You might be referring to my posts about Estring. It has been miracle for me. I couldn't tolerate the the less expensive vaginal creams. I am rejuvenated. It's worth the money. With my Medicare insurance it costs $500 the first of the year and after that $200. One silicone ring has 3 months of time release estrogen which you insert yourself into your vagina. It restored my vaginal health it thickeded tissue, stopped the painful burning and eliminated any odor. I have read post that say it slides out, mine needs a finger push back to the upper part of the vagina about once a week which I do in the shower, but it has never come close to sliding out. You don't feel it and during sexual intercourse your partner doesn't either.