Overview

• Ultimate A Gold is now on sale exclusively at ESK’s website for $100 following its September 24 launch.
• The upgrade uses 0.1% retinal (up from 0.06% in the original) alongside niacinamide, ceramides, polyhydroxy and hydroxy acids, and 4‑N‑Butylresorcinol to target texture and pigmentation while supporting the skin barrier.
• Blair discovered ESK through an aesthetician during years of undiagnosed multiple sclerosis and says the brand’s calming cleanser reduced inflammation and rosacea, prompting the collaboration.
• The cream is positioned as a single-step night treatment addressing fine lines, visible pores, pigmentation, thinning skin, and barrier repair for people with sensitive or chronically ill skin.
• ESK, an Australian cosmeceutical brand founded by Dr. Ginni Mansberg and Daniel Rubinstein in 2017, says the formula reflects more than a decade of iterative development.