Description
If you only start with one formula, our Foundational Serum is it: Super-hydrating, thanks to its multi-pathway hydration system, it’s formulated to relieve and repair dry skin, calm inflammation, and restore comfort. It’s the foundation for barrier repair—and the best serum for sensitive skin.
WHO IT’S FOR
- Dehydrated, tight skin
- Fine lines from dehydration
- Fatigued, dull skin
- Sensitivity and reactivity
Shipping & Returns
- Standard free shipping on orders over $99
- Standard and express shipping options available at checkout
- Standard shipping time is between 1–5 business days
- Pause, change or cancel your subscription after your first renewal
- Returns of unopened and unused products accepted up to 30 days
- See terms & conditions for more information
Ingredients
Full Ingredient ListAqua, butylene glycol, glycerin, hydrolyzed yeast extract, squalane, beta glucan, polyglutamic acid, allantoin, panthenol, sodium lactate, sodium PCA, sodium hyaluronate, chlorella vulgaris extract, arginine, glutamine, valine, glycine, serine, leucine, isoleucine, polyglucaronic acid, xanthan gum, propylene glycol alginate, lecithin, hydroxyethylcellulose, acrylates/C10-30 alkyl acrylate crosspolymer, glyceryl stearate, behenyl alcohol, palmitic acid, stearic acid, cetyl hydroxyethylcellulose, lauryl alcohol, myristyl alcohol, cetyl alcohol, polysorbate 80, cetearyl alcohol, sodium polyacrylate, sodium citrate, phenoxyethanol, ethylhexylglycerin, citric acid (may contain), sodium hydroxide (may contain).
How to Use
TSOSFace Serum
The Foundational Serum
If you only start with one formula, our Foundational Serum is it: Super-hydrating, thanks to its multi-pathway hydration system, it’s formulated to relieve and repair dry skin, calm inflammation, and restore comfort. It’s the foundation for barrier repair—and the best serum for sensitive skin.
Best for Dry, Sensitive
Helps with Damaged Skin Barrier, Dehydration, Redness
Size
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The Foundational Serum$48.60
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