Thanks for finding the link ! Although similar materials, their properties are such that I use them for different things. Sugru has a stronger adhesion and a denser consistency, which makes it great for many things, including phone/tablet bumpers and hooks. Oogru is much softer and will pop off quickly if you make a hook or electronics bumps. But it works very well for projects that have some kind of support, like your head sculpt, or a supported mold negative to cast into. It is also much softer, so if you need to add pins(around) to situate a mask, they go in nicely.
My latest project was a cement casting, where I used Sugru to encase the form (vinyl munny doll), suspended it in a small enclosure (cardboard box), and filled the cavity between the form and the enclosure with Great Stuff foam. After I cut it out and removed the form, I coated the inside of the Oogru with Vaseline and then used rubber bands to hold it together and squirt cement into it with a sandwich bag. It was a 4" cast, and for a first time casting cement experiment, it went pretty well! Although I accidently broke off both arms and an ear, the form itself was fairly clean, with only a bit of seam mismatch. I was too impatient to let the cement cure completely in the mold, so since it was still soft, I wire brushed the whole thing to give it a rough texture. Once I epoxy the broken bits off, my cement munny will be complete! (insert Dr. Frankenstein laugh here)
Part of being an artist is knowing how to roll with your own mistakes😊