Adjectives With And
When two or more adjectives come together, we sometimes put and before the last one and sometimes not. The rules are as follows.
After a verb
When adjectives come in predicative position (after be, seem and similar verbs), we usually put and before the last one.
He was tall, dark and handsome.
She was like a winters day: short, dark and dirty.
In a very literary style, and is sometimes left out.
Before a noun
In attributive position (before a noun), and is less common.
A tall, dark, handsome cowboy
Note that and has to be used when two or more adjectives refer to different parts of something.
A yellow and black sports car
A concrete and glass factory