Year-round heat and oppressive humidity create a skin profile dominated by chronic congestion, oil overproduction, and UV damage. Winters are mild — peel season extends nearly year-round. Post-treatment skin needs lightweight recovery products, not heavy occlusives. The corrective window is November through March.

The most extreme seasonal range in the country. Brutal winters with low humidity strip skin bare; hot, humid summers reverse course entirely. The result is a constant barrier repair cycle whose skin needs change dramatically every 90 days. Medspas here benefit from strong seasonal rotation messaging.

The most dehydration-dominant skin environment in the country. Low humidity year-round pulls moisture from skin constantly. UV radiation is extreme. Scottsdale is one of the highest-density medspa markets in the US — clients are experienced, treatment-fluent, and expect visible results. Hydration is the clinical baseline, not a seasonal concern.

Two distinct sub-climates: Southern California's dry warmth versus the Pacific Northwest's cool fog. What they share is a wellness-forward, ingredient-literate consumer who scrutinizes labels. This is the natural-beauty capital of the country — FFG's whole-ingredient transparency is a direct fit for Pacific market values. The ingredient education story closes sales here faster than anywhere else.

High altitude is the defining factor: UV radiation increases 4–5% per 1,000 feet of elevation. Denver at 5,280 feet receives nearly 30% more UV than sea level. Combine this with four true seasons and extreme cold winters, and you have the most UV-damaged, dehydrated skin profile in North America. Resort medspas see peak retail during ski season.