The active: Bakuchiol (Sytheon Sytenol® A) at 0.5% - the exact source and strength used in the head-to-head clinical trials.
The Barrier-Repair Matrix: Glycerin, Sodium Hyaluronate, Panthenol (pro-vitamin B5), Centella Asiatica Extract, Allantoin, Dipotassium Glycyrrhizate, Chamomilla Recutita (Chamomile) Extract, Calendula Officinalis Extract.
What is not in it: No fragrance or parfum. No essential oils. No limonene, linalool, lavender or bergamot. No added color. No silicones. No mineral oil.
Why it is a soft yellow: the color is natural, not added. Two of the botanicals above - Chamomilla Recutita (Chamomile) Extract and Calendula Officinalis Extract - are golden by nature and give the serum its pale yellow tint. There is no dye in it, and because these are real plant extracts the exact shade can vary slightly from batch to batch.