Sign up for their Beauty Club, but honestly, hoarding points isn't worth it. The real play is waiting for the 20% or 30% off sales they email members, then stacking that with Rakuten. Just watch out at checkout: their promo codes almost always exclude gift sets and engraving.

You have to route through UNiDAYS to get the code, then paste it into the "Enter Promo Code" box at checkout. Honestly though, it’s usually only 15% off and excludes gift sets. Just wait for their 20% off sitewide sales instead, or buy during Sephora’s Rouge sale if you want points.

Just heads up, the promo code box in the bag preview is pretty finicky. YSL doesn't let you stack codes with their free gift promos; it’s strictly one or the other. Also, that 20% welcome coupon almost always excludes the Le Vestiaire line. Honestly, just wait for their 25% sitewide sales instead.

Honestly, don't buy Libre or Touche Éclat full price on their site. Wait for YSL's 20% to 30% off sitewide sales, or just grab them during the Sephora Rouge event. If you do buy direct, check their Offers page first; the free mini GWP sets stack automatically in your cart without a promo code.