Spotter

Every spotting agent — what it does, when to use it, fiber safety, brand crosswalk.

Stain family chemistry — how each family bonds to fiber, what breaks it, what makes it permanent.

Oxidizing vs reducing, the 18°F rule, color-fastness testing, and the mandatory post-bleach neutralization rinse.

Situational analysis for old stains, prior treatments, and high-value garments.

What spotting really is, the 5-step decision loop, and the #1 rule that prevents damage.

The 6 stain families, their chemistry, and which agent breaks each bond.