Why Does My Face Get So Oily?

February 11, 2024

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If your face tends to resemble a grease-slicked pan by midday, you’re not alone. Excessively oily skin afflicts millions, causing embarrassing shine, large pores, acne breakouts and constant need to blot. But what causes faces to overproduce sebum, the waxy, fatty substance giving skin its slippery sheen?

Genetics, hormones, age, environment, products and health factors all potentially play a role in pushing sebaceous glands attached to hair follicles into sebum overdrive. When these tiny exocrine glands spew out too much sebum, faces soon sport a telltale bright sheen.

For sufferers, the impact of excess facial oil goes beyond just vanity concerns over good looks. Oily skin also raises risks of blemishes, infections and even self-esteem issues for some. Thankfully, dermatology now offers both lifestyle tweaks and advanced treatments to rein in overactive sebaceous glands to restore balance.

The Burden of Oily Skin: More Than Just Shine

Greasy skin may seem like just a cosmetic nuisance, but the impact of excess facial sebum spans wide:

  • Frequent acne breakouts – Clogged pores from thick sebum encourage bacteria buildup, inflammation and pimples
  • Enlarged pores – Stretched out pores grow more visible as sebum and skin cells accumulate
  • Dull, uneven complexion – Excess oil makes skin look darker and shadowed
  • Frequent need to blot shine – Carrying oil blotting paper becomes a necessity
  • Makeup meltdowns – Cosmetics slide right off oily skin by midday
  • Self-consciousness – Embarrassment over skin’s oiliness saps confidence
  • Clearly, restoring proper sebum balance offers more than just aesthetic benefits. Controlling shine and oil brings real lifestyle and self-image gains.

Core Reasons Faces Overproduce Oil

While oily skin arises from excess sebum, numerous interconnected factors regulate sebaceous glands’ activity levels. Imbalances in these variables push glands into overdrive:

Age and Hormones

The ride of puberty brings hormones like androgens to their lifetime zenith. Androgens turbocharge sebaceous glands, causing them to swell and pour out additional sebum. This hormonal surge during the teen years contributes mightily to the near-universal teen battles with oily skin and acne.

Later in adulthood, estrogen levels in women suppress sebum production. Accordingly, many (but not all) women enjoy less oily skin after reaching their 20s. However, later hormonal events like pregnancy, peri-menopause or hormone therapy can reawaken oiliness.


Like most human traits, hereditary DNA blueprints greatly influence skin characteristics. Those born to parents with perpetually oily skin often struggle similarly. Variations in certain genes predispose skin to generate excess sebum across a lifetime.

Alas, this inherited tendency means oily skin doesn’t always “grow out” of glands’ hormonal hyperactivity period in youth the way acne does. Genetics keeps oil flowing for some well into middle age.

Ethnic Background

Racial and ethnic groups show differing risks for oily skin, likely due to slightly varied sebaceous anatomy. Those of African, Caribbean or Asian heritage tend toward more active sebaceous glands and oilier complexions. Mediterranean and Latinx groups also grapple more with facial shine compared to Caucasians.

Environment and Season

Like most chemical reactions, sebaceous gland sebum synthesis accelerates in heat. Around 80°F, sebum production peaks. Accordingly, those living in warmer, humid climates invariably deal with more facial oiliness compared to temperate regions. Sticky, sweltering summer weather also temporarily boosts oil action.


Surprising to some, medications also tweak sebum output. Both oral and injected corticosteroids often cause side effects like oily skin, stretch marks and edema. Likewise, testosterone therapies, lithium and some synthetic hormone birth control boost androgens, triggering more facial sebum secretion.

Diet and Nutrition

High glycemic carbohydrates and sugars in modern diets boost insulin levels. In turn, insulin elevates androgens – the hormones stimulating sebaceous glands. Some researchers also link vitamin deficiencies and inadequate hydration to heightened sebum production.

Clearly, no single switch controls oiliness and shine. An intricate web of genetic, chemical, seasonal and dietary factors collude to drive sebaceous glands’ activity. Now let’s explore the root causes of why this overactivity disproportionately targets the face.

Reasons Facial Skin Gets Oilier

Yes, arms, backs and other skin sees excess oil. But typically the face – especially the high visibility forehead, nose and chin – get hit hardest by shine. This lopsidedness occurs thanks to three key face-specific factors:

High Density of Sebaceous Glands

By evolutionary happenstance, sebaceous glands concentrate most densely on upper facial skin. The forehead, nose and chin host up to 900 glandular units per square inch – eight times the density across the arms or back!

With facial skin so overloaded by glandular hardware, any uptick in sebum activity guarantees a proportional explosion of oiliness. A minor 20% increase in per-gland secretion balloons to a 60% jump in visible facial shine due to the dense glandular field.

Thin Epidermis Over Glands

Additionally, the epidermis – the outer skin barrier – proves thinnest on the face at just 0.05mm thick. With little tissue separating sebum from air, facial oil easily oozes to the surface rapidly after secretion. Meanwhile, thicker body skin retains more sebum internally.

Together with high gland concentrations, this tissue thinness spotlights even mildly elevated sebum generation into a major oily complexion problem.

High Sensitivity to Androgens

Finally, facial skin reacts most sensitively to androgenic hormones like testosterone. Concentrations of hormone receptors in upper facial skin outpace the body over 10-fold!

Accordingly, fluctuating androgens during puberty, menstruation and menopause target the face aggressively. Sebaceous glands in the thinner, gland-rich, hormone-sensitive facial epidermis over-respond, flooding the cheeks, forehead and nose with oil.

In summary, evolutionary legacies and hormone biochemistry collude to focus oily skin primarily on the exposed face instead of buried bodily skin. Blemishes and shine in areas like the back or legs garners less notice and causes fewer lifestyle problems as well.

Why Face Oiliness Fluctuates

If you struggle to control sudden swings from oil slick to desert dry facial skin, the cyclical nature of sebum production likely befuddles you. Multiple daily and monthly cycles govern sebaceous gland output, causing facial oil levels to frequently shift up, down and even disappear:

Circadian Rhythms

Human bodies follow innate 24-hour bio-cycles dictating vital processes like waking, sleeping, appetite and temperature. Sebaceous glands also adhere to this circadian clockwork. Sebum synthesis peaks in the late morning then ebbs through the afternoon and evening.

Accordingly, facial oil typically crests mid-morning as you start your workday. Acting in opposition, nighttime repair processes then soak up excess oil after dusk. These circadian sebum tides underpin the annoying way faces often need blotting after a full workday, yet feel drier upon waking.

Menstrual Cycles

In fertile women, the iconic 28-day menstruation clock also triggers facial oiliness shifts. Around ovulation halfway through the cycle, the spike in estrogen ratchets up sebaceous gland activity. Faces get oilier for 5-7 days despite no other changes. Later, progesterone suppresses glands again leading up to menses.

These transient but recurring spikes in oiliness tied to ovulation frustrate many women. Without tracking cycles, mysterious oily days seemingly strike at random.

Seasonal Rhythms

Finally, seasonal cycles also sway facial shine thanks to climate. As mentioned earlier, hot, humid summers amp up sebum flows across all skin areas. But facially concentrated sebaceous glands respond most actively, pouring out more peak oil in July and August.

Conversely, low temperatures, sunlight and arid winter air applied to the face strips away moisture while slowing oil emission. Flaky and dry facial skin results, causing many to switch from blotting papers to heavy moisturizers come January.

Taken together, this multiplicity of daily, monthly and yearly cycles creates a constantly moving target for controlling shine via sebum. The intrinsic variability seeds frustration when trying to keep facial oil under control.

Thankfully, research now illuminates these cycles so patients better understand the “whys” behind their endlessly short-cycling skin. Let’s now turn our focus toward addressing oily skin’s causes.

Lifestyle and Skincare Remedies for Oily Skin

Now that we better understand why are faces overproduce oil amidst a backdrop of circulating hormone, genetics and environmental factors, what solutions exist? Following a dual inside-outside approach works best:

Inside: Adjusting Internal Metabolic Triggers

  • Lower high glycemic diet – Cut sugar and refined carbs to reduce insulin, the oil-boosting hormone
  • Stay hydrated
  • Take targeted nutraceuticals like zinc, primrose oil or probiotic supplements shown to inhibit sebum
  • Manage stress via sufficient sleep, relaxation techniques, socializing and exercise

Outside: Controlling External Skin Factors

  • Use gentle non-comedogenic cleansers free of alcohol, oils and fragrances
  • Exfoliate regularly with AHA/BHAs but avoid abrasive scrubs
  • Moisturize just enough with lightweight gels, not heavy creams
  • Apply oil-control products containing niacinamide, clay minerals or charcoal
  • Use oil-free sun protection rated SPF 30 or higher

Dermatologists tailor these internal and external interventions toward each unique patient’s lifestyle, habits and specific drivers of excessive facial sebum production. Patience is mandatory – it takes weeks of diligent adherence to both skin care and metabolic tweaks to rebalance overactive oil glands.

And for 30% with severe oiliness not controlled through routine products and habit shifts alone, prescription therapies bring out the big guns against shiny skin.

Advanced Rx Treatments for Resistant Shine

While most oily skin improves thanks to gentle care and better living choices, some continues shining on aggressively. A specific class of prescription treatments – the retinoids – offer these resistant cases potent sebum-squelching relief by directly stabilizing glandular overactivity:

Topical Retinoids

First-line intervention usually starts with topical retinoids applied on the oiliest facial areas – typically the classic T-Zone of the forehead, nose and chin.

Tretinoin (Retin-A/Renova) 0.05% cream or gel uses a vitmain A derivative to reduce visible pores by 30% within weeks. Stronger still, a newer agent called adapalene (Differin) normalizes abnormal gland clumping to cut sebum emission at the source.

Both advise using just 2-3 nights weekly to avoid irritation and ramping up slowly. But in just 8-12 weeks both substantially dry overly-slippery skin. Continued nightly or every-other use keeps oil at bay long-term.

Systemic Retinoids

However, about 20% with hereditary oily skin still require heavier weapons – systemic retinoids like Accutane or Soriatane. Working internally, these oral forms of vitamin A prevent sebaceous gland formation during skin growth. With fewer oil glands at maturity, long-term sebum production turns permanently down.

Yes, harsh side effects of severely dry skin, sun intolerance and teratogenic risks demand fussy medical oversight. But a majority getting systemic retinoids for acne anyway enjoy lasting oily skin relief as an added bonus afterwards!

Of course, not everyone with oily skin requires such strong systemic treatment if overdoing topicals and lifestyle tweaks reins in sebum sufficiently. Still, it’s reassuring the nuclear option exists for those with bullheaded oil flow resistant to all else.

Key Takeaways on Oily Skin

  • After reading about the intricate biochemical factors driving facial oil overproduction, hopefully the origins of oily and shiny skin now makes more logical sense.
  • With science illuminating root causes, we better grasp why and how faces endlessly cycle between embarrassing shine and flaky dryness.
  • Knowledge of inner and outer control points grants us greater power over unruly sebaceous glands.
  • Finally, an arsenal of simple daily tweaks to advanced prescription potions equip us to target both minor and bullhead oiliness for clearer, healthier skin.

No more blind guessing at why faces over-oil – science now elevates our ability to pinpoint exactly how and why sebum balance goes awry!


  1. Baumann, Leslie (2022). Cosmeceuticals and Cosmetic Practice. McGraw Hill Education: USA.
  2. Hawkes, et. al (2017). Molecular mechanisms of facial skin aging. Journal of Cosmetic Dermatology, 16(3), 16-22
  3. Slominski, Andrzej (2021). Neuroendocrine regulation of sebocytes – A part of the brain-skin connection. Experimental Dermatology, 31(2): 320-338
  4. Strauss, John S. (2004). Approach to managing acne in operative candidates. Journal of the American Academy of Dermatology, 50(2), 101-105
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