What is skin s.p.a.? BeautiControl's new Skin Sensors and skin s.p.a. (scientific personalized analysis) are the secret to a personalized, scientifically-advanced skin care regiment that meets your skin's specific needs. Our incredibly intuitive Skin Sensors assess the condition of your skin and the easy-to-use skin s.p.a. effectively analyzes factors such as age, skin concerns, sensitivity and complexion to prescribe your personalized skin care regimen.