Final answer:
The cosmetologist should recommend an alkaline/cold wave as a perm type for non-porous hair.
Step-by-step explanation:
A hair analysis indicating non-porous hair would suggest that the client's hair does not easily absorb moisture. In this case, the cosmetologist should recommend a perm type that is suitable for non-porous hair, such as an alkaline/cold wave. Alkaline/cold waves are designed for resistant hair types and produce a stronger curl, making them ideal for non-porous hair.