This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.



Welcome to Prequel's Skin Notes skincare blog. We’re passionate about skin health education. Skin Notes is a collection of articles that focus on skincare concerns, ingredients, technologies and more.
cosmetic ingredients for acne

Cosmetic Ingredients That Help With Acne

Acne-prone skin often requires a targeted approach, focusing on ingredients that tackle the primary causes of breakouts: excess oil or hyperseborrhea, clogged pores caused by hyperkeratinization, and hyperproliferation of Cutibacterium acnes (formally called P. acnes) bacteria. Acne symptoms can include comodones, blackheads, inflammation, redness, and excess oiliness. Acne is the most common skin condition in the United States and is considered a skin disease.

Read now
breaking out vs purging

Is Your Skin Purging or Just Breaking Out?

If you've ever incorporated a new skincare product into your routine, particularly a retinoid or an exfoliant, you may have experienced new breakouts or skin reactions. While initially alarming, this process, known as "purging," can be a sign that your skincare product is effectively working. Dr. Sam Ellis, a board-certified dermatologist, sheds light on this phenomenon.

Read now
acne-prone skin type

What to Know About Having an Acne-Prone Skin Type

Acne-prone skin refers to skin that is prone to developing various types of acne lesions, including blackheads, whiteheads, pimples, cysts, and comedones—those small, skin-colored bumps commonly found on the forehead and chin. This skin type is characterized by several factors, such as increased sebum production, inflammation, clogged pores, and the presence of the Propionibacterium acnes bacteria on the skin. 

Read now
acne mistakes

7 Common Acne Mistakes to Avoid for Clearer, Healthier Skin

Acne can be frustrating, but with the right knowledge and skincare routine, you can regain control over your breakouts. In this blog post, dermatologist Dr. Sam Ellis shares valuable insights on the most common acne mistakes people make and provides practical advice on how to avoid them. Let's delve into each mistake and discuss recommended skincare products to help you achieve clearer and healthier skin.

Read now


DISCLAIMER: All skin care articles are intended to help educate on specific ingredients and skin care topics. Our articles are written to be informative and informational. They are not indicative of individual performance. Results may vary per applicant. Any reference to a specific patient experience is not a medical suggestion for treatment. Please note that any Prequel products with referenced ingredients are formulated for Cosmetic Use Only and NOT intended as replacements for physician advice and/or pharmaceutical product recommendations.


No more products available for purchase

Your Cart is Empty