A full shower will clean up most of the toxins in the vagina. Avoid using overly hot or cold water, as your little sister will still be tender from your intimate activities. But whatever you do, remember to avoid douching. Douching or the use of feminine washes can actually wipe out all bacteria including the good ones, which can damage the pH level in the long-run.
There are a lot of products that you’ll find in pharmacies that are marketed to help you “stay fresh”. However, these products are usually made with harsh chemicals like perfumes or lotions, which are bad not only for your skin but also your intimate part as well
If you’re planning to have a long cuddle session, you can do a gentle rinse with warm water instead, or use a clean wet towel to wipe it down before diving back for a long cuddle.