The difference between baby wash and body wash is the baby wash is formulated differently and contains less or nor harsh chemicals which can be bad for baby's sensitive and delicate skin and regular body wash usually contains more harsh chemicals but are okay for older kids, teens and adults skin.
The kind of body wash that toddlers should use is a baby body wash or body wash that is formulated for sensitive skin or kids.
The best body wash for a toddler is CeraVe baby wash.
Cetaphil sensitive skin baby wash is also a good bath wash for toddlers with sensitive skin and for toddlers in general.
Kids and toddlers should bathe every 2 to 3 days unless they get dirty or sweaty sooner.
Kids and toddlers need a bath or shower daily when they get sweaty or dirty or when they are going through puberty.
However kids that are not sweating or getting dirty only require a bath every 2 days or so or twice a week but if the kid is dirty or sweating or going through puberty and or has body odor they should bathe daily or shower daily.
Even adults that don't get dirty or sweaty can go a few days between bathing or showering.
However in the summer when you're sweating or the kid is sweating or getting dirty or if you work job such as outdoors where you get dirty then of course you should shower to clean off.
Although once a kid is going through puberty such as over 11 it's recommended that the kid bathes or showers daily as they can produce more body odor during puberty.
After puberty hits, daily showering is essential due to new hormones flowing through the body bringing along unwanted body odor and acne.
Your child should also wash their face twice a day with a gentle noncomedogenic face wash.
By age 4 the child should be able to bathe themselves although you still want to be in the bathroom with them for safety and to ensure they are actually bathing and not just playing and or acting like they are bathing.
When your child can express their needs, understand instructions, and follow simple commands, it is a positive sign that they are ready to take on the responsibility of bathing independently.
By age 4 or 5, children often acquire the language skills necessary to comprehend and execute basic bathing routines.