
A slicker brush is the most-used and most-misused grooming tool in the house. The fine bent wire pins pull tangles and loose coat out of medium and long hair better than anything else — and pressed flat against skin, the same pins scrape it raw. Technique matters more than which model you buy.
Detangling and finishing medium, long, curly and wavy coats. The bent pins catch loose undercoat and separate knots that a comb would snag on. It is not a deshedding tool for heavy double coats — an undercoat rake does that job — and it does very little on a short smooth coat, where a rubber curry works better.
Line brushing. Part the coat with one hand, brush the exposed layer from the skin outward, then move the part up an inch and repeat. Brushing over the top of the coat only tidies the surface and leaves mats intact underneath. Hold the brush loosely and let the pin tips do the work — pressure is what causes damage.
Red, irritated skin from pressing the pin tips into it or working the same patch repeatedly. Keep the brush nearly flat, use short flicking strokes that lift away at the end, and never make more than three passes over one area. If skin pinks up, stop for the day — dogs and cats that get brush burn learn to dodge the brush.
Self-cleaning models retract the pins with a button so trapped hair lifts off in one piece. That is worth it for daily use and for anyone brushing more than one animal. Standard slickers hold their pin shape longer and cost less, but you clear them by hand or with a comb.
Yes, on longhaired cats, with a softer pin and half the pressure you would use on a dog — cat skin is thinner. Regular brushing also cuts down swallowed hair. Cornell’s Feline Health Center notes that vets recommend owners get into the habit of brushing and combing their cats’ coats daily to reduce hairball risk.
Run a metal comb through the coat afterwards. If it passes from skin to tip without catching, the brushing worked. If it snags, the slicker skimmed the top and the mats are still down near the skin — go back and line brush that section.

See the dog grooming kit guide and the cat shedding guide, or browse Grooming.
Daily for curly and long coats, two to three times a week for medium coats, and before every bath without exception — water tightens existing mats into felt that no brush will open afterwards. Five minutes daily prevents the hour-long detangling session later.

Not when held flat with light pressure. Pain comes from digging the tips in or repeating passes on one spot.
Slicker for tangles and finish, rake for pulling dense undercoat. Double-coated breeds need both.
Lift the hair mat out with a comb, then wash the pad occasionally with warm soapy water and dry fully to stop the pins rusting.
Yes. Splayed or straightened pins scratch skin instead of catching coat.
Only with a detangling spray and after the coat is nearly dry. Brushing a soaking coat tightens knots.
Use a soft-pin slicker and very short sessions. The aim at that age is getting the puppy comfortable being handled.
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