Help with choosing correct dye for leather couch.

Would appreciate help to choose the correct dye & preparation products to give my good quality leather couch a new lease of life.
I have watched several UTube videos and it seems to be very doable. Ideally I would like to purchase from an Irish supplier.
I am changing the colour from dark brown to Ivory. I would expect to allow for or five coats after preparation.

Have never heard of this. I would worry about the dye coming off on light coloured clothes especially in warm weather.

An ivory couch... very 1970s.

Maybe for your first go at this do something less ambitious than changing it from dark brown to creamy white?!

Agree with Deanpark.....it is ambitious! but I like a challenge and seeing the couch is not new it's worth taking a chance. I have seen a completed couch in a friends house & it was as good as new & they sourced the dye in the UK.
Checked out the site & it got great reviews but postage was dearer than the product, hence looking for an Irish supplier.