The skin, our largest and most dynamic organ, is a marvel of biology. Its structure and function go beyond mere aesthetics—it serves as a protective barrier to keep toxins and pathogens out, it regulates temperature, and acts as a sensory organ. However, understanding your skin type is crucial for optimizing your skincare routine. Whether you have oily, dry, or combination skin, let’s uncover the science of skincare and debunk common myths, like the notion that oil is unnecessary for oily or combination skin.

The Skin's Structure & Function

The skin barrier (also known as the stratum corneum) is the outermost layer of the epidermis, which is primarily composed of dead skin cells embedded in a lipid matrix that includes ceramides, cholesterol, and free fatty acids. These lipids are essential for maintaining hydration and protecting against environmental aggressors. When the skin barrier is compromised, it can lead to dryness, irritation, infection, and heightened sensitivity.  

Skin Types: The Foundation of Skincare

1. Oily Skin: Characterized by an overproduction of sebum, this skin type often appears shiny and may be prone to acne. Contrary to popular belief, oily skin still benefits from oils. Why? Because stripping the skin of oil can lead to overcompensation, causing even more sebum production.  

2. Dry Skin: Lacking in oil, dry skin often feels tight and may appear flaky. It craves nourishment from lipid-rich products to reinforce the skin barrier and lock in moisture. 

3. Combination Skin: A mix of oily and dry areas, typically with an oily T-zone and drier cheeks. This type requires balanced care, addressing both oiliness and hydration.

Debunking Common Myths About Oil and Skincare

A common misconception, often perpetuated by statements like “For ingredients to absorb properly, you need skin that's totally free of oil,” is that oil impedes product absorption. This is not entirely accurate. For example, beta hydroxy acid (BHA), such as salicylic acid, is fat-soluble. Its molecular structure allows it to penetrate the lipid-rich layers of the skin barrier, making it effective for deep cleansing and treating acne. 

Intrinsic and Extrinsic Factors That Affect Skin Health

The condition of your skin is influenced by both internal and external factors:

Intrinsic Factors: Gut microbiome, genetics, sleep, emotions, age. 

Extrinsic Factors: Diet, climate, lifestyle, including excessive sun exposure.  

A diet high in processed foods, sugar, dairy, and anti-nutrients (nuts, seeds, grains), can lead to inflammation while a lack of animal fats and iodine can cause dryness. Climate plays a role, too—humid environments may exacerbate oiliness, whereas cold, dry air can strip moisture from the skin.

Beleza by Z: Your Partner in Luxurious, Effective Skincare

1. BHA + Tallow Gentle Cleanser & Mask: Formulated with salicylic acid and suet-derived beef tallow lipids, this dual-purpose product gently exfoliates, unclogs pores, and nourishes the skin barrier without stripping essential lipids. It’s perfect for all skin types, including dry, oily, and combination skin.   

2. Bio Lipids Tallow Moisturizer SPF 30: A must-have for every skin type, this moisturizer infused with biocompatible lipids derived from beef tallow offers broad-spectrum sun protection without chemical sunscreens, making it an excellent choice for restoring and protecting the skin barrier.

The Bottom Line

All skin types need oil to maintain balance and prevent overproduction of sebum. Stripping all oil can lead to dehydration and signals the skin to produce even more oil, perpetuating a cycle of imbalance with a compromised skin barrier. By embracing oil products in your skin routine and respecting your skin’s lipid composition, you can achieve and maintain a radiant complexion.