Hi friend, good morning!
In terms of functionality, there won’t be much difference between shampoos: they’re a cleansing system to remove dirt and oil.
What happens is that in addition to specific assets for specific marketing stories for specific audiences, there may be some small particularities (which may be fruit of common sense and reproduction by the industry or actually have a solid and scientific base)
Summarizing what my experience has shown me so far:
- Body wash (body): basically a traditional shampoo, what you use on your hair can usually be used on the body without major problems (because when you wash it it “runs down” your body), but the pH can be a differential to suit the skin more than the strands
- Shampoo (hair): traditional, it can contain actives, have a variable pH range, have a conditioning agent included or not (2 in 1), etc… there are several possibilities here, choose a market niche, research and have a lot of fun creating (:
- Intimate cleanser: usually has a lower pH and mild surfactants to match the intimate area without irritating (they are usually fragrance-free)
- Shampoo (infant/baby): they use milder surfactants and often add the appeal of “tear free”, reducing the possibility of irritation is essential… I read some papers that reinforce that for babies the use of syndets is most recommended precisely because they are smoother, but I don’t know the extent/truth of this information. The simpler and shorter the formulation, the better.
Hope this was helpful. Other members feel free to correct me if I said something incorrect or rash (I’m still not very experienced as I’m very young)
Have a good day!