b7edcfba___We_Can_Help___LIVESTRONG_org__Pros
Water- or silicone-based vaginal lubricants [Cons] May wear off and need to be re-applied during sexual caressing or intercourse. May not be effective enough to prevent pain if there is severe vaginal dryness. [Pros] 
Water-based lubricants last longer and work better than old-style gels. Silicone-based lubricants last even longer but are more expensive and may stain sheets or clothing. Can be purchased at most drugstores or over the Internet. Look for brands that do not contain perfumes or chemicals such as parabens or gycerine, and that try to keep the vagina at the same pH as is normal before menopause (4.5).
Female Sexual Health After Cancer | We Can Help | LIVESTRONG.org
Pros