Ingredients combine and affect each other. So- you need to understand ingredient interactions to know how to layer skin care products. This blog focuses more on ingredients while the Skin Care Routine Steps blog focuses more on skin care products.

The skin care routine quiz developed by dermatologist Dr. Leslie Baumann MD, FAAD is used by dermatologists to prescribe skin care routines by skin type. It was developed and perfected at the University of Miami from 2005-2009. Only Skin Type Solutions and licensed medical providers have the legal rights to use this quiz.

There are 4 main issues that can may skin unhealthy: Dehydration, Inflammation, Evenness of Pigmentation, and Risk of Aging. The skin type quiz assesses these skin problems to diagnose your Baumann Skin Type and customized a skincare routine that targets any barriers to skin health.

The Baumann Skin Type System is a skin type classification system used by dermatologists to categorize patients into 16 distinct Baumann Skin Types in order to prescribe skin care regimens in medical practices. This scientific system is the gold standard and is discussed in many medical textbooks. Only Skin Type Solutions has the license to use the Baumann Skin Typing System. Learn about the 16 skin types and how they differ.

Retinoids are the best antiaging ingredients in skincare with the most evidence-based research. But what exactly are retinoids and what is the difference between retinol and a retinoid? This topical retinoid list will explain natural and laboratory made retinoids. Start here when learning about retinoids.

Skin Barrier Repair Moisturizers are the best moisturizers to treat dry skin and eczema. How to find the best barrier repair creams? How long do barrier repair moisturizers take to work? Which lipids are best?

Should you wash your face with distilled water, tap water, bottled water, filtered water, micelle water or thermal spa water? Should you splash your face with cold, warm or hot water to remove your cleanser? Learn how your choice of water affects your skin care routine efficacy.

Jello skin is the new beauty trend. What does jello skin mean from a scientific point of view? Our dermatologists explain.

The key to glowing skin is desquamation and exfoliation of the epidermis. Exfoliation and desquamation of skin occur when cells from the top outer layer of the skin known as the stratum corneum is removed.

Should you apply vitamin C, retinol, niacinamide, salicylic acid and medication to damp or dry skin? Skin hydration will affect absorption, efficacy and side effects.

These are the basics that you need to know about sunscreens. You can find a chart that lists UV filters and which ones block UVA and UVB rays. You can also learn our opinions about the best sunscreen ingredients and organic vs chemical.

Learn how anti-oxidants work. This is a glossary of antioxidant ingredients. You can find a list of antioxidants used in skincare and click on the specific ingredient to learn more details.