You launched your first product. It's performing. Customers love it. Now you're ready to expand, a second SKU, then a third, maybe a full routine. This is the moment where most skincare brands start to fracture. Not because the products are bad individually, but because each one was developed in isolation, different labs, different ingredient philosophies, different formulation logic. The result is a product line that looks like a collection of unrelated items rather than a c