The Makeup Myths That Skin Experts Wish You'd Stop Believing

Pores are small openings in the skin that house hair follicles and sebaceous (oil) glands. They lack the muscle structure needed to dilate or contract on command. What steam actually does is soften the plug of sebum and debris inside a pore, making extraction easier — a meaningful but very different mechanism. Similarly, splashing cold water after cleansing may temporarily reduce the appearance of pores by causing mild skin tightening, but it does not physically close them. Pore size is largely determined by genetics, age, and how stretched a follicle has become from previous blockages.

The key variable here is removal, not application. Sleeping in makeup — particularly foundation and eye products — can clog pores, contribute to breakouts, and prevent the skin's overnight repair cycle. But a consistent cleanse at the end of the day effectively negates most concerns. In fact, some everyday makeup products contain ingredients like hyaluronic acid, niacinamide, or mineral-based UV filters that may actively support skin health. If you notice persistent irritation, it's worth considering whether a specific formula or ingredient is the trigger rather than makeup as a category. See our guide to foundation pitfalls for tips on choosing formulas suited to your skin type.

Dermatologists generally recommend applying about a teaspoon of sunscreen to the face for the SPF value on the label to hold. Most people apply a fraction of that amount in foundation. Studies examining this issue consistently find that real-world SPF from makeup products is significantly lower than the stated figure. The practical recommendation from skin health professionals is to apply a dedicated broad-spectrum SPF 30 or higher sunscreen as a separate step before makeup, rather than relying on your base to do the job.

'Natural' is not a regulated term in U.S. cosmetics labeling, meaning brands apply it inconsistently. Many naturally derived ingredients — essential oils, botanical extracts, citrus-based compounds — are among the most common causes of contact dermatitis and allergic reactions. Conversely, some lab-synthesized ingredients are among the most extensively safety-tested compounds in cosmetic formulation. What matters is how a specific ingredient behaves on your skin, not whether it came from a plant or a lab. Patch testing new products and consulting a dermatologist for persistent reactions is more useful than filtering by 'natural' alone.

The small jar icon on most makeup packaging — called the Period After Opening (PAO) symbol — indicates how many months a product remains stable and safe after opening. Over time, preservative systems break down, allowing bacterial and fungal growth. Mascara and liquid eyeliner are particularly high risk given repeated exposure to the eye area. Expired products may also separate, change texture, or lose active ingredient potency. Replacing mascara every three months and liquid-formula eye products every six months is a widely cited guideline among makeup artists and eye care professionals alike.

While longevity is the most marketed benefit of primer, its utility goes further. Silicone-based primers can temporarily fill the appearance of larger pores and fine lines, creating a smoother canvas. Hydrating primers can support comfortable wear for dry skin types. Color-correcting primers can neutralize discoloration before foundation application. That said, primer is not a requirement for everyone — those with relatively even skin texture may find a well-formulated moisturizer provides enough of a base. The minimal-product makeup guide explores which steps are genuinely optional versus impactful.