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YES! — MSB is very safe for colors.
Many of our customers use MSB in every load claiming that it brightens their colors as well as whitens their whites. MSB is NOT bleach. It does not "remove" anything from your clothing. It is very gentle on all washable fabrics and there is never worry about fading or color bleeding as a result of using MSB.
Facts about MSB:
MSB is basically a blue iron powder suspended in water and contains a non-toxic amount of a biocide and pH balancer. Even in it's concentrated from, MSB is non-toxic, biodegradable and environmentally friendly. MSB is manufactured under non-sterile conditions and is therefore, not generally recommended for ingestion by human or animal.
MSB is manufactured and tested as a laundry whitener only. All other uses are "at your own risk". While we advertise MSB for some other uses, we try to remain clear that these other uses come to us from loyal customers and we pass the information on as a public service.
Learn about many more uses for Mrs. Stewart's® Bluing on our Many Uses page.