Sorry, pnfpn, I have no idea about outlet stores. I have a House Of Fraser credit card, which I applied for online.
The House of Fraser sale is already online, but the beauty products I've looked at so far have only 10% off, not 20%. I'll bet that's only on brands that I'm not interested in LOL.
The Debenhams discount runs alongside the 9 points per £1 offer, which makes it even better. I've got £15 in points on my beautycard, and £20 worth of House Of Fraser vouchers, so I think I'll be splitting my purchases between the two.