Won't my skin type change?

Skin type never changes?

(x) Skin types, such as oily, normal, and dry, can change depending on age, season, lifestyle, health or emotional state, and climate.

Generally, 'dry' skin, which lacks moisture and is rough, is dominant until puberty; 'oily' skin, which is shiny due to excessive sebum secretion, is dominant from puberty to the 30s; and 'dry' skin becomes dominant again as one gets older.
This means that even moist and smooth normal skin can change depending on internal and external factors; therefore, it implies that one should not stick to a single cosmetic product or skincare routine, but rather adapt it according to changing skin types.