Material
Fleece
Brushed polyester with a raised pile. Easy chemistry, but the pile mats with heat and pills with rubbing, and softener flattens it.
- SurfaceNon porous
- WashingMachine
- Colour run riskLow
- Reviewed7 September 2026
What fleece can and cannot take
- Heat Avoid
- Water and soaking Tolerates it
- Acids, including vinegar Use with care
- Strong alkalis Use with care
- Solvents Use with care
- Chlorine bleach Use with care
- Abrasives Avoid
Always test on a hidden area first and let it dry before you treat the visible mark.
General rules for fleece
Fleece is genuinely easy on the chemistry. Cold rinse, biological detergent, cool wash, and the milk comes out.
The pile is what needs protecting. Heat mats and glazes it, so no tumble dryer and no radiator, and rubbing at a mark raises pills that are then permanent.
Skip fabric softener. It coats the fibres, flattens the loft and reduces how much the fleece absorbs, which matters if it is a baby blanket.
Check the label
Fleece is brushed polyester, so the chemistry is polyester and the handling is about the pile. Heat flattens and glazes the nap permanently, and fabric softener coats the fibres and kills the loft, which is why fleece care guidance excludes it.
Stains on fleece
- Baby sick Rinse from the back in cold water, work biological detergent into the mark and soak it, then wash cool and dr...
- Blood Blot first, then use cold water and a tiny amount of compatible detergent. Work from the edge, rinse or blot...
- Body oil Blot fleece, pretreat a permitted washable patch with liquid detergent, rinse and use a cool labelled wash. A...
- Breast milk Blot and cold-rinse a label-approved washable item. Use your compatible biological liquid detergent and a per...
- Bronzer Lift loose bronzer from fleece before it is rubbed in. Blot cream bronzer, follow the material or care label,...
- Coffee Blot first. If the label permits, gently rinse cool water through the back of the mark, supporting the fabric...
- Concealer Lift the concealer, flush Fleece from the back with cool water, pre-treat the oily residue with one drop of w...
- Cooking grease Lift and blot cooking grease from Fleece, absorb the oil, pretreat both sides with washing-up liquid for 10 m...
- Deodorant Rub a fresh white deodorant mark off fleece while it is dry. For residue that remains, follow the care label...
- Hair dye Blot Fleece, flush cool water through the back, pretreat with liquid detergent, wash to the care label and ai...
- Lipstick Lift lipstick from Fleece, work from the reverse with a drop of washing-up liquid, rinse cool, wash to the ca...
- Motor oil Blot motor oil from Fleece, absorb the residue, pretreat both sides with a little washing-up liquid, wash to...
- Nail polish Lift free polish without rubbing. A small mark on plain washable compatible cloth may respond to the linked l...
- Period blood Lift any tissue with a spoon edge, then blot. Use cold water and a tiny amount of compatible detergent for th...
- Pet urine Blot until nearly dry, then use only the cool-water quantity fleece can tolerate. Use a labelled pet urine en...
- Sweat Rinse fresh sweat from the back of Fleece with cool water, pretreat retained residue, wash to the care label...
- Tomato sauce Lift tomato sauce from Fleece, flush from the reverse with cool water, pretreat the remaining film, wash to t...
Fleece is polyester knitted and then brushed to raise a soft pile.
The chemistry is polyester
So enzymes, cool soaking and oxygen products are all available and effective, and the fibre does not absorb the stain deeply.
The pile is the fragile part
Heat melts the tips of the raised fibres slightly, which mats them together and leaves a hard shiny patch. That is why fleece that has been through a hot dryer never feels the same again. Rubbing does a mechanical version of the same thing by raising pills.
Softener is a mistake
Fabric softener coats fleece fibres, which flattens the pile and reduces absorbency. On a baby blanket that is the opposite of what you want.
It sheds microfibres
Washing fleece releases plastic microfibres, which is a reason to wash it only when it needs it rather than repeatedly to chase a faint mark.
Sources
What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.
-
How to clean polyester and synthetics, Woolite
manufacturer
Detergent manufacturer guidance that polyester is washed, dried and ironed at low to medium heat only because excessive heat can melt the fibres, that air drying is preferred to machine drying, that nylon is washed in cool water on a gentle cycle because repeated machine washing causes discolouration and loss of shape, and that acrylic knits are laid flat or dried at low temperature to keep their shape.
Checked 7 September 2026
-
How to remove baby formula stains, Purex Stain Lab
manufacturer
Manufacturer guidance identifying breast milk, formula and baby spit-up as protein stains, explaining the role of enzymes, and warning that the mark should be checked before any drying heat because heat sets what remains.
Checked 7 September 2026
-
A guide to newborn laundry, American Cleaning Institute
trade body
Cleaning trade body guide to pre-treat breast milk, formula or spit-up with an enzyme stain remover, soak fresh marks for at least 30 minutes and older marks for several hours, launder, and keep stained items out of the dryer until the mark has gone.
Checked 7 September 2026