I bought these markers last year when my granddaughter was two. The 'Washable' lulled me into a false sense of security which then ended up staining a suite cushion bright purple. I then found out that it is only washable on a hot wash, and that it took 2 attempts just to get it out of my cleaning cloths. I contacted Crayola, (Vivid in the UK) and was given a few tips, none of which worked. They have a disclaimer on the back of the pack, of course, but who reads the back.
This got me thinking though. The pack is recommended for babies of 12 months plus. Babies of a year old are very prone to put things in their mouth. Although there is a CE mark, I assume that it is tested for skin contact, but there is no list of chemicals on the pack, so who knows what the babies might be ingesting. I have asked Vivid for their feedback, but, apart from general cleaning advice, no-one has got back to me yet.