How often should you dry clean a suit?

Ask ten tailors how often to clean a suit and you will get answers between three wears and once a year. The wide spread exists because the honest answer depends on the wearer, the climate and the garment — but four to six wears is the range that holds up for most people wearing wool in the Upstate.

The reasoning cuts both ways. Dry cleaning is a mechanical and chemical process: solvent, agitation, heat and pressing. Every cycle takes a small amount of life out of wool fibres and slightly compresses the fabric's loft. A suit cleaned after every single wear will visibly age faster than an identical suit cleaned every fifth wear.

But under-cleaning does more damage than over-cleaning, and this is the part people get wrong. Perspiration is mildly acidic and leaves salts behind in the fabric. Body oils oxidise. Both attack fibres continuously while they sit there, and both set into discoloration that becomes permanent — usually at the collar, the underarms and the inside of the cuffs. By the time a suit looks dirty, the damage has been accumulating for weeks.

Upstate South Carolina summers are genuinely hard on tailored clothing. High humidity means more perspiration and slower drying, and a jacket worn in August in Greenville accumulates more soil in one wear than the same jacket worn in November.

In practice: in summer, treat four wears as the ceiling rather than the floor, particularly for anything you wear in a car without air conditioning or walk any distance in. In winter, five or six wears is comfortable. If you work in an environment with cooking smells, smoke or heavy fragrance, clean more often regardless of season — odour molecules bind to wool and only come out with solvent.

This is the one rule with no exceptions. Never put a soiled garment into long-term storage, and never put a suit away at the end of a season without cleaning it first.

Two things happen to a stored, unclean suit. The oxidising oils and perspiration salts continue their work for months uninterrupted, so what was an invisible soil line in April is a permanent yellow-brown collar mark in October. And clothes moths and carpet beetles are attracted specifically to the proteins in perspiration, skin cells and food residue — they are far more interested in a dirty wool jacket than a clean one. Most moth damage in closets happens to garments that were put away soiled.

Trousers get roughly twice the abuse a jacket does. They are sat on, they gather soil at the hem, they take the brunt of perspiration at the waistband and seat, and the inner thigh sees constant abrasion. Left to their own schedules, trousers would want cleaning about twice as often as the matching jacket.

Clean them together anyway. Dry cleaning shifts colour very slightly with each cycle, and a pair of trousers cleaned twelve times next to a jacket cleaned six times will eventually not match under office lighting. If you own a suit you wear often, the genuine solution is a second pair of trousers cut from the same cloth — rotate them and the whole suit lasts roughly twice as long.

Most of the work of extending the interval happens at home, and it takes about ninety seconds.

Brush the jacket after each wear with a proper clothes brush, working downward with the nap. This removes surface dust and grit before it works into the weave — grit is abrasive and cuts fibres from the inside. Hang the suit on a wide wooden or padded hanger, never a wire one, so the shoulders keep their shape and the jacket does not develop a permanent dimple at the top of each sleeve.

Then leave it alone for a day. Wool needs about twenty-four hours to release absorbed moisture and recover its shape, which is why wearing the same suit two days running ages it noticeably faster. Give it air and space in the closet rather than compressing it between other garments, and skip the plastic dry cleaning bag entirely — it traps moisture and can yellow fabric over time.

For spot treatment between cleanings: blot, never rub, and never apply heat. If you spill something, bring the garment in and tell us what it was. An untreated fresh stain is a much easier job than a stain someone has already worked on with an over-the-counter product.