Offers and Promotions Watsons Singapore 11.11 Super Sale: Buy 1 Get 1 Free, $11 Deals, Brand Vouchers and $4 Off First Online Order, Until 11 Nov 2026 Watsons Singapore's 11.11 Super Sale features Buy 1 Get 1 Free deals, $11 deals, second-item offers and brand vouchers. First-time online shoppers get $4 off with code NEW2026. Nov 9, 2026