How to improve rough and dry cat fur
To improve a cat's rough and dry fur, you can supplement its nutrition, such as by adding some nutritional supplements, like boiled chicken breast, beef, fish, or fruits and vegetables. Appropriate supplementation can help the cat's fur grow. 
Try to get the cat to drink more water.
Buy more cat bowls, change the water frequently, or use goat milk powder or treats to entice your cat to drink more water. This will improve the dry and dull fur caused by dehydration and help metabolize excess salt in your cat's body!
Bathe your cat appropriately
For indoor cats, bathing them once every three months is generally sufficient. When bathing, use a professional, mild, and non-irritating pet shampoo to better care for your cat's skin and reduce damage to their skin and fur.
Correcting a cat's picky eating habits
Cats' picky eating habits should not be tolerated by their owners; they should be corrected as early as possible. Lecithin can also be used as a substitute for cat treats to supplement the cat's nutrition and help maintain a healthy coat and skin.
Do a good job of deworming
Regularly deworm your cat to prevent parasitic diseases that can lead to malnutrition and insufficient hair growth.
Choose a mild and nutritious cat food for healthy fur.
For your cat's daily staple food, it is recommended to choose a light, nutritious cat food that promotes a healthy coat, providing your cat with healthy nutritional support through its diet.
