Vaseline and baby oil are great for preventing a tear, but will also interfere with the repair bond if present in the wound. Although acetone is bad for TPE, if used sparingly, it will provide a clean, dry surface to repair. TPE glue must also be used sparingly, or it will melt a bigger hole. Brush on a small amount, close it, and keep it that way at least 30 minutes. Open it slowly, and if you see any open wounds, retouch with glue and repeat. Good luck.