Quick Answer
Shower water factors some people with sensitive skin notice include chlorine/chloramine smell, hardness residue, and very hot water. Point-of-use filtration can reduce chlorine/chloramine. Skin is individual — this is education, not medical advice; consult a dermatologist for skin concerns.
Problem
People with sensitive skin search for whether shower water matters, but medical claims in marketing make the topic confusing.
Product Recommendation
ZOOSHEN filters target chlorine/chloramine at the point of use. See /shower-filters for media options, and /water-science/water-hardness-units to understand what a filter does not do.