How to Get Rid of Tough Laundry Stains: Blood, Oil, and Grease | Cold First, Heat Last

Blood lifts with cold water and an enzyme detergent, while oil and grease need detergent worked in before the warmest wash the care label allows.

Oil and grease fail the opposite way: people rinse too early, before detergent has had time to break the fat apart. Getting rid of tough laundry stains comes down to matching the water temperature and the product to what actually soaked into the fabric, then refusing to dry anything until the mark is gone.

The routine below follows the American Cleaning Institute’s stain-removal guidance and Clorox’s product instructions. One rule sits above all of them: the care label on the garment wins every argument.

What Causes Stains to Set, and How Do You Prevent It?

Heat sets stains. Hot water on fresh blood and a hot dryer cycle on any remaining mark are the two most common reasons a stain survives a wash.

The American Cleaning Institute is direct on this: check the item after washing, and never put it in the dryer while a stain remains. Repeat the pretreatment and wash instead. A dryer doesn’t just lock a stain in — it can intensify it, which is why air-drying until the fabric is visibly clean is the single most protective habit here.

Two more habits save garments. Treat stains as soon as possible, since fresh marks release far more easily than dried ones. And test any stain remover on an inconspicuous area first, especially on delicate or colored fabrics — a hidden spot inside a hem tells you what the whole garment will do.

How Do You Remove Blood From Clothes?

Fresh blood comes out with cold water. Dried blood needs warm water plus an enzyme-containing product that breaks the protein down.

For fresh blood, rinse or soak the garment in cold water, then launder per the care label. If a trace remains, repeat the pretreatment and wash. Fabric-safe bleach is an option only when the care label permits it.

For dried blood, pretreat or soak in warm water with an enzyme product, then launder. The enzyme has to match the stain: protease targets protein-based marks like blood, while lipase targets oil-based ones. Check the detergent label for which enzymes it carries — that detail decides whether the soak does anything.

Confirm the garment is bleach-compatible first. Clorox advises against bleach on silk, suede, and leather.

How Do You Get Oil and Grease Out of Fabric?

Oil and grease need detergent worked into the dry fabric before any water touches it, then the warmest wash the care label allows.

For light stains, keep the fabric dry and blot excess oil with a paper towel. Apply liquid laundry detergent, a prewash stain remover, or a small amount of dish detergent directly to the mark. Work it in gently and wait 5–10 minutes, per Clorox. Rinse with warm water, then machine-wash with detergent in the warmest water safe for the fabric. Air-dry and inspect before applying any heat.

Heavy grease takes a different approach. Place the stain facedown on clean paper towels, apply cleaning fluid to the back, and swap the towels often as they absorb oil. Let the item dry, rinse, and launder at the hottest temperature the fabric tolerates.

For grease-heavy food stains, Clorox suggests scraping off excess, blotting, optionally applying cornstarch for 5 minutes, then dish detergent for another 5 minutes before a warm-water rinse.

Which detergent actually carries enough enzyme and surfactant for these jobs varies a lot between brands — our breakdown of the best laundry detergent for stains covers which formulas held up on blood, oil, and grease in testing.

Which Product and Water Temperature Should You Use?

Match the product to the fabric and the stain type, and default to the coolest water that still does the job.

Ordinary stains respond to cold water. Heavily soiled or tough stains call for the warmest setting safe for the fabric — the care label settles which one that is. Clorox’s guidance for its bleach-free color-safe stain remover, Clorox 2, is a useful reference point for how these products are meant to be used:

Whatever you choose, wash at the warmest care-label temperature for tough stains, and air-dry afterward so you can check the result before heat makes it permanent. Full stain-by-stain guidance lives in the American Cleaning Institute’s stain removal guide, and Clorox’s own instructions cover blood removal with bleach and oil stain removal in detail.