StCroix Products

We are CosmeticFormulators.com, one of the largest independent product development labs in the U.S. We create and manufacture products for dermatologists, medical clinics, universities, and both large and small brands worldwide.
We also own StCroixProducts.com and the Peptide Blast line. These are our own formulas, created in-house by scientists — not marketers — and manufactured in our facility in Oakdale, Minnesota.
Our flagship product is the Peptide Blast Red Light Pre-Treatment Serum, designed specifically for use before red light therapy. It’s a lightweight, fast-absorbing serum with penetration enhancers that deliver peptides and green tea extract deep into the skin. Both peptides and red light therapy are backed by science, and studies show high-grade green tea extract can provide up to 10 times better results compared to standard extracts.