In the first episode, judges Val Garland and Dominic Skinner said her final look was flat and simplistic and Ailish ended up in the Face Off, going head to head against contestant Joe Tiernan to stay in the competition.
However, Val told her: "I think it's amazing you've got this much colour down being colour-blind".
"That is showing a very determined make-up artist."
Ailish thinks she was able to execute her looks after learning more about colour theory, helping her understand how to mix together the shades she needed.
Plus, after freelancing in the industry for a few years, she's become used to labelling all of her palettes with the names of corresponding colours.