Will it hold an I cup breast form? They are not light and wanted to know if they'll hold up a 5lb breast form.

Thanks for your question. I recommend using our antiperspirant on your skin before attempting to attach a 5 lb breast form to your chest with the adhesive, so that your own perspiration doesn't contribute to the form coming loose. That said, 5lbs is very heavy, and we recommend that you wear a bra, in addition to the adhesive. If you want to go braless with these large forms, you may wish to consider doing that only for a short period of time at home or for pictures, etc. If you're going to go out, especially if you're being active, dancing with them, etc. we strongly recommend a bra with forms that are larger than a D cup.

How long does this adhesive last? I am transitioning i am looking for something that will last all day.

Many people are using it all day and there are a few medical applications that use this adhesive for 2-3 days. However, it depends on how much you sweat, breast form weight, clothing, etc. Keep in mind that all adhesives are poor in "peel" mode. Furthermore, skin-safe adhesives are required to have a relatively gentle release to avoid damaging the skin. Accordingly, heavy breast forms are likely to start peeling off after a while; this goes for ANY breast form adhesive. For best results, breast form adhesives work remarkably well in combination with a compressive garment. Compressing the breast forms against the chest reduces the peel forces so that the adhesive is primarily subjected to shear forces, which is what adhesives excel at. In short, if you don't sweat too much, the adhesive should work all day with moderately sized forms, and a compressive garment.

If i have size d breastforms would this product work?

Yes, this very strong adhesive will work on any sized breast forms that are constructed as gel-filled polyurethane shells. However, please be extra careful when cleaning the adhesive off the back of the form, so as not to puncture the polyurethane shell. We recommend that along with the adhesive, you purchase the adhesive remover which is effective for removing adhesive residue both from your skin as well as from the back of the breast forms. The DressTech Proform breast forms sold here on Amazon have a double-thick back which makes them more durable for cleaning.

Has anyone experienced a bleeding rash?

DressTech Breast Form Adhesive is manufactured in an FDA registered facility and has been lab tested for skin safety. Most people are able to wear the adhesive for several days at a time without any problems. However, skin irritation is possible in certain circumstances. For example, some individuals are prone to "sweat rash" if perspiration is trapped for prolonged periods. Rashes may also be caused by an allergic reaction to materials in your prosthesis or appliance. If you do experience any difficulties with the product, please contact the manufacturer; contact information is on the bottle.