vaseline is not the best choice for vaginal lubrication nor is plain ky jelly. there are many good products formulated for this role that are tested on vaginal tissues and stay slippery not sticky/tacky. you can consider trying astroglide the special ky vaginal lubricant--there should be a selection at your local store near condoms or female hygiene products. some women also use sweet almond oil vitamin e oil or even olive oil. but few of the natural oils have been studied for long term vaginal effects.
is it ok to use vaseline as a vaginal lubricant?