Discontinued hard-to-find cosmetics and fragrances

When you’re looking for discontinued and hard to find cosmetics, such as lipstick, lipgloss, foundation, blush, eyeshadow, eyeliner, and fragrances, these sites can help.

Gone But Not Forgotten
by Estée Lauder Companies Inc.
Consists of the following ELC brands: Estée Lauder, Clinique, Origins, Prescriptives, Bobbi Brown, Aramis, MAC, La Mer, Jo Malone, Donna Karan, Rodan + Fields, Tommy Hilfiger, Bumble and bumble, Lab Series for Men, Michael Kors, Darphin, American Beauty, Flirt! grassroots^TM and good skin^TM that have been discontinued within the last 24 months.

BuyMeBeauty.com
Sells hard-to-find cosmetics (and jewelry) at discounted prices. Brands include Adrien Arpel, Alexandra de Markoff, Almay, Artmatic, Baby Spa, Bath & Body Works, Bobbi Brown, Borghese, Bourjois, Burberry, Calvin Klein, Carolina Herrera, Charles Of The Ritz, Clarins, Clinique, Cover Girl, Dermablend, Dolce & Gabbana, Dr. Jeneatte Graf, DS Laboratories, Elizabeth Arden, Estee Lauder, Gloria Vanderbilt, Hardware, Jerome Alexander, Lancome, Laura Mercier, Lord & Berry, Loreal, MAC, Max Factor, Maybelline, Michael Kor, Neutrogena, Oil Of Olay, Origins, Pedishu, Physicians Formula, Phyto Pro, Ponty, Prescriptives, Prestige, Revlon, ROC, Rocket City, Salvatore Ferragamo, Sephora, Shiseido, StudioMakeup, Trish McEvoy, Triwi, Ultima II, Versace, Victoria’s Secret

Brand Sites
Some of the makeup lines have a section on their site for Last Chance, such as at NARS, where you can buy newly discontinued products with some at discount prices:
https://www.narscosmetics.com/USA/last-chance

Also be sure to check out sites like makeupalley.com where you can swap with others, and eBay where you can bid on discount and discontinued makeup and perfumes.