P Serum + Retinol (RET)

P Serum + Retinol (RET) is a personalized serum by Universkin that delivers retinol at a provider-selected concentration tailored to your skin's tolerance and anti-aging goals. Retinol remains the single most evidence-backed anti-aging ingredient in dermatology—stimulating collagen production, accelerating cell turnover, smoothing fine lines, and refining texture. The Universkin advantage is precision: your RELUXE provider starts you at exactly the right strength and can adjust upward as your skin builds tolerance, avoiding the irritation and peeling that come with one-size-fits-all retinol products. Available exclusively at RELUXE Med Spa in Westfield and Carmel, Indiana. The biggest reason patients abandon retinol is irritation—and the biggest cause of irritation is starting too strong. Universkin solves this by allowing your provider to prescribe the exact concentration your skin can handle today, then incrementally increase it over time as tolerance builds. This personalized approach means you get retinol's full anti-aging power without the redness, flaking, and discomfort that derail most people's retinol journey. For patients who want the most potent retinoid available, your provider can also combine retinol with supporting ingredients like niacinamide (barrier support) or peptides (collagen boost) in the same serum—creating a multi-active formula that no off-the-shelf product can match.