Grooming Myths That Dermatologists Keep Correcting

This is arguably the most persistent grooming myth of all time. When you shave, you cut the hair shaft at the skin's surface. The follicle — the living structure beneath the skin that controls hair characteristics — remains completely undisturbed. What creates the illusion of thicker regrowth is the blunt, flat tip left by the razor blade. An unshaved hair tapers naturally at the end; a shaved one does not. That blunt edge feels coarser and looks darker against the skin, but the hair itself is biologically identical to what was there before. For a practical look at shaving methods and skin comfort, see our wet shave vs. electric shave comparison.

Acne is primarily driven by a combination of excess sebum, dead skin cells, and the bacterium Cutibacterium acnes — not by surface dirt alone. Washing twice daily with a gentle, non-comedogenic cleanser is generally sufficient to remove excess oil and environmental residue. Washing more frequently disrupts the skin's acid mantle and natural microbiome, causing dryness and rebound oiliness that can actually fuel more breakouts. If your skin feels tight or looks red after cleansing, that's a signal you're overdoing it, not a sign the cleanser is working harder. Our skincare myths article covers related misconceptions about cleansing and skin health.

Pores are simply openings in the skin through which hair follicles and sebaceous glands connect to the surface. They have no sphincter-like mechanism to dilate or constrict. What steam actually does is soften the oil and debris inside follicles, making manual extraction or cleansing somewhat easier. Cold water can temporarily reduce the appearance of pores by slightly constricting surrounding tissue, but it does not permanently shrink them. Pore size is largely determined by genetics, age, and skin type. Managing oiliness and keeping pores clear of buildup is the most effective approach — not temperature cycling.

Poison ivy is natural. So is urushiol, the compound that causes its rash. The chemistry of an ingredient — not its origin — determines how skin responds to it. Common natural extracts like tea tree oil, citrus essential oils, and lavender are well-documented contact allergens for some people. Meanwhile, many synthetic compounds used in grooming products have extensive safety testing behind them. The term 'chemical-free' is scientifically meaningless — everything, including water, is a chemical. Evaluate products by their formulation, your skin's specific sensitivities, and, when in doubt, a patch test on the inner arm before full application. If you have sensitive skin, our guide on grooming for sensitive skin offers practical adjustments.

Oil and moisture are not the same thing. Sebum is produced by sebaceous glands to protect the skin; water content in skin cells is a separate matter. When the skin becomes dehydrated — from over-cleansing, harsh products, or environmental exposure — it can respond by ramping up oil production. A lightweight, non-comedogenic moisturizer (gel-based formulas work well for oily skin types) helps maintain the skin's water balance without adding pore-clogging weight. Skipping this step rarely reduces oiliness and often makes it worse over time.

The skin's outermost layer — the stratum corneum — acts as a physical and chemical barrier against the environment. Exfoliation is useful for removing dead cell buildup, but this layer needs time to regenerate. Most dermatologists recommend physical or chemical exfoliation no more than two to three times per week for normal skin, and less frequently for sensitive or dry types. Daily exfoliation thins the barrier prematurely, leading to chronic irritation and a compromised ability to retain moisture. If this sounds familiar, our article on over-exfoliating and skin barrier damage explains the mechanism in more detail.