A washing guide does not mean every blazer can be washed at home. Start with this garment's complete label. The outer fabric composition alone is not an instruction for a blazer with lining, finished lapels and shaped shoulders.
Separate permission from programme selection
First establish whether washing is allowed and which method the label specifies. Only then compare settings with the appliance. A programme named delicate does not replace this step. Ask the manufacturer about unreadable or incomplete instructions; do not investigate home washing by wetting part of a lapel.
Record the construction condition
Empty every pocket and inspect buttons, buttonholes, lining seams and back vents. Record shoulder and lapel shape before care. Do not unpick the lining or remove permanently sewn construction components. Existing damage needs separate assessment rather than omission from the washing description.
Communicate the problem
Locate stains and describe their known origin and previous attempts. If professional cleaning is needed, identify important decorations and matching outfit pieces too. Do not assume an identical result from cleaning only one area. Agree on the stain and whole-item approach before treatment.
Check the shape afterwards
For a permitted process, establish drying and finishing according to the label as well. Once fully dry, examine shoulders, lapels, front, sleeves and lining. Compare with the earlier condition without forcing the shape. Altered form or uneven layers needs investigation; stronger washing or pressing is not an automatic repair.