house repairs question - bath tub seal

ummmmmmm...

Sil, is that a glassy white

Cut the edge back on the good caulk, clean and dry the bare spot and recaulk it.

You could do the minor/easy repair but I wouldn't. I done this repair for folks a lot of times and it's really quite simple.

1) with a utility knife, carefully slice down vertically along the top of the existing bead. You'll want to try to avoid scratching the porcelain so go gently. But even if you do slightly mark the porcelain, your new silicone will cover and protect.
2) then grip with fingers or needle nose pliers and try to pull out the old silicone. Often this can take additional cuts with your blade horizontally on the tub. Here you do want to be careful not to mark the tub but it's quite easy to do this.
3) after you get the major amount of the old silicone out, you'll likely be left with bits here and there still bonded to tiles/wall or to tub. Use your fingernail or a plastic tool.
4) with a dry cloth, clean both surfaces, vertical and horizontal.
5) For the new bead, the biggest mistake you might make is to cut the hole in your silicone tube too large. Too much silicone makes a mess and will cause you some grief. With your caulking gun, try to make a nice smooth motion along the tub/wall. Then using your finger, gently spread the new silicone so it has a concave shape spreading it to fill the gap and slightly above and below the gap (to ensure water doesn't have a place to penetrate. You may have to work at this a bit but it takes a while for the silicone to firm up so you have time to be patient.

This is a good skill to have. And like any such job done the first time, you will probably mess up a bit as you work but it will be correctable. Give it a go.

no it is white like snow

Hire a Canadian. They are great at getting rid of seals. Especially ones white like snow.

thanks that did the trick