Silk is dirt / stain averse. Hence washing silk is an easy and quick process. 2 modes are recommended to wash Silk
Avoid Dryer. Rinse under cold water until the detergent has been completely washed out. Never twist or wring out silk garments; doing so can damage the fabric. Use a towel to absorb any excess water from the garment. Dry the garment in Shade (ensuring that it's not in direct sun light) on a cloth line of drying stack.
Iron only when silk is dry. Put a cloth between the fabric and the iron. Is possible, turn your silk fabric inside out and iron it over on a low setting.
Hanging on soft / blunt edges is recommended. Regular airing removing the folds recommended. Store in breathable covers (non-breathable polythene covers is not advisable) only
Cotton sarees usually bleed off excess colour during their 1st wash.
Home wash in Coldwater with a few drops of mild detergent in the water. Hand wash only. Remove within 10 minutes of soaking. Shade dry only. Iron on reverse so that the hand painted ink is not impacted.