Citrus, I see something but I can't tell the colour? Is it pink in real life? It's so hard photographing these faint lines!
Kim, I think you get them confused because when I think of sander I automatically think of dust because when you sand stuff down it leaves dust. Lol! Perhaps this is why?
With the hair dye, most of them have something called PPD in them, which is responsible for penetrating the hair with pigment, I think. It's a potential allergen, so do a skin test first, behind the ear AND on the inside of your elbow. Any redness, rash, irritation, itching, anything at all don't use it. Most of the time they are fine, but there have been quite a few cases over here where people have had allergic reactions to these dyes (the darker they are, the more PPD is in them, btw), and a few have gone into anaphylactic shock and died. You may be more sensitive when pregnant, hormones can also alter the colour (my mum's eyebrows went purple once lol!) so do a strand test too. You should always practice skin tests each time you use any hair dye, particularly those with PPDs, because it's completely possible to have used them safely for many years and then develop an allergy randomly. Our skin's chemical make up is always changing, so this is why.
If you want to avoid the risk, have it done through a cap like highlights, instead. This is what I do if I want it dyed. This way, contact with the skin is highly unlikely because the cap is in the way. You do have a small amount of roots untouched, but having gone light blonde to dark brunette this way, I can say I didn't actually notice the roots. Foils will get closer to the roots but you risk coming into contact with the skin a little more.
You could opt for something more friendly like henna, but because it's a metallic dye, this means using any other dye over this, even a few years after, will result in weird colour changes. I used it, then had light blonde highlights a year or so later and the hair leftover which had remnants of henna on it still, went green lol
It's beautiful stuff, but it can be hard to deal with. I also don't know how the henna would react during pregnancy, if it would go the right colour. And also, there's always an element of red/auburn in it because of the plant