it's common trait of S types to try to look better. the same as common for T types to try to make reasonable decisions
besides Jung types other reasons may influence on different behavior also. where there is no use to look better, S will do lesser efforts. when lesser money to spend on clothes, cultural norms, depressive states, etc
> Would forgoing appearances in favour of ''cerebral'' or mind-oriented interests be interpreted as imbalance, if one is considered a Sensory type?
depends on the situation and degree of aesthetic conflict
that tatoo is too much wrong