3.1.3 Method of pre-treating heavily soiled spots
Place a towel behind the part where there is heavy soiling or stubborn dirt(for example on collar and sleeves).Using plain water, wet the area surrounding the soiled spot, then apply liquid neutral detergent (for clothing) to the spot, and lightly tap the dirty spot using a soft brush.(Do not scrub.)
(For this pre-treatment, use only detergent containing no fluorescent agents)
Some stains due to chemical changes, for example, those caused by permanentwave solution, ironrust, mildew, ink, lndia ink, or lipstick, and fabric yellowing or discoloration caused by sunlight, can't be removed.
The longer you leave a stain as-is, the harder it is to remove./Treat stains as soon as possible.