The House of SIIS
Peptide-focused. Future-forward. Designed in Miami, made in USA with globally sourced ingredients.
A Skincare House Built on Peptides
SIIS Peptides was created with a clear focus: peptides — the ingredient category we believe is shaping the future of skincare.
Rather than chasing every trend, we concentrate on one discipline and refine it. Our first formula, the Copper Peptide GHK-Cu Collagen Support / Elasticity Serum, brings together GHK-Cu copper peptide and the PAL-150 peptide complex in a silky serum that is made in USA with globally sourced ingredients.
Based in South Florida, SIIS draws on Miami’s light and its spirit of modern elegance: black, gold, and nothing unnecessary.
Our Principles
Focus
Peptides first. Every formula starts with a purposeful peptide profile.
Honesty
Clear ingredient lists and cosmetic claims we can stand behind.
Craft
Crafted with care and presented in packaging worth keeping.
Kindness
Cruelty free, vegan and paraben free.