Understanding Skin Types — Beyond Oily, Dry, and Combination

Last updated: 5 March 2026

Most of us grew up learning that skin falls neatly into three categories: oily, dry, or combination. Whilst this simplified classification has served as a useful starting point, modern dermatological science has revealed a far more nuanced picture. At Axiom Aesthetics, our clinical team — comprising GMC-registered practitioners with advanced training in dermatological assessment — takes a comprehensive approach to skin typing that goes well beyond these traditional labels.

The Limitations of Traditional Skin Typing

The conventional oily-dry-combination model, first popularised in the 1900s by Helena Rubinstein, was groundbreaking for its time. However, a 2019 study published in the British Journal of Dermatology demonstrated that this system fails to account for several critical variables, including skin sensitivity, pigmentation tendencies, and barrier function integrity.

Dr Sarah Chen, our lead aesthetic practitioner, explains: “When I assess a patient’s skin, I’m looking at far more than surface oil levels. We evaluate transepidermal water loss, sebum production patterns, melanin distribution, and the skin’s inflammatory response threshold. This gives us a truly personalised understanding of each individual’s skin.”

The Baumann Skin Type Indicator

One of the most significant advances in skin classification came from Dr Leslie Baumann, whose research published in the Journal of Cosmetic Dermatology proposed a 16-type system based on four key parameters:

• Oily vs Dry (O/D) — Measures sebum production and hydration levels using sebumeter readings
• Sensitive vs Resistant (S/R) — Evaluates the skin’s tendency towards inflammation, acne, rosacea, or stinging
• Pigmented vs Non-Pigmented (P/N) — Assesses melanin production patterns and hyperpigmentation risk
• Wrinkled vs Tight (W/T) — Measures the skin’s structural integrity and ageing trajectory

This system produces 16 distinct skin types (such as OSPW or DRNT), each requiring a uniquely tailored approach to treatment and homecare.

The Fitzpatrick Scale and Beyond

The Fitzpatrick scale, developed by Harvard dermatologist Thomas Fitzpatrick in 1975, classifies skin into six phototypes based on response to ultraviolet radiation. Whilst invaluable for guiding laser treatment parameters and sun protection recommendations, research published in JAMA Dermatology (2021) has highlighted its limitations, particularly for individuals of mixed heritage.

At our clinic, we supplement Fitzpatrick typing with individual melanin index measurements using spectrophotometric analysis. This provides objective data that helps us select the safest and most effective treatment protocols for each patient.

The Skin Barrier: Your Invisible Shield

Perhaps the most overlooked aspect of skin typing is barrier function assessment. The stratum corneum — the outermost layer of your skin — acts as a critical barrier against environmental aggressors and water loss. A compromised barrier, as documented in research from the International Journal of Cosmetic Science, can manifest as:

• Increased sensitivity to topical products
• Persistent dryness despite regular moisturiser use
• Redness and irritation that seems disproportionate to triggers
• Slow healing after aesthetic procedures
• Increased susceptibility to breakouts

We measure barrier function through transepidermal water loss (TEWL) readings, which quantify how much moisture escapes through the skin. This data directly informs our treatment recommendations and helps us identify patients who may need barrier repair before undergoing certain aesthetic procedures.

The Microbiome Factor

Emerging research from institutions including the Human Microbiome Project has revealed that your skin hosts trillions of microorganisms — collectively known as the skin microbiome — that play a fundamental role in skin health. A landmark 2022 study in Nature Reviews Microbiology demonstrated that microbiome composition varies significantly between individuals and directly influences:

• Inflammatory skin conditions such as acne, eczema, and rosacea
• Wound healing capacity
• Natural antimicrobial defence
• Skin pH regulation
• Response to topical treatments

Understanding your microbiome profile is increasingly becoming an essential component of comprehensive skin assessment.

Seasonal and Hormonal Variations

Your skin type is not static. Research published in the Journal of the European Academy of Dermatology and Venereology has confirmed what many of us intuitively know: skin behaviour changes with the seasons, hormonal fluctuations, stress levels, and even altitude. A person classified as having “oily” skin in summer may present with significant dryness during winter months.

This is why we recommend regular skin assessments — typically every six months — to adjust treatment protocols and homecare routines in response to these natural variations.

How We Assess Your Skin at Axiom Aesthetics

Our comprehensive skin assessment protocol includes:

1. Visual examination under magnification and specialised lighting
2. Digital skin analysis using advanced imaging technology to assess subsurface conditions
3. Sebum and hydration measurements across multiple facial zones
4. TEWL readings to evaluate barrier function
5. Comprehensive medical history review including medication, lifestyle, and environmental factors
6. Photographic documentation for tracking progress over time

This thorough approach ensures that every treatment recommendation we make is grounded in objective clinical data rather than subjective guesswork.

Frequently Asked Questions

Can my skin type change over time?
Yes, absolutely. Hormonal changes, ageing, medication, climate, and lifestyle factors can all alter your skin type. This is why regular professional assessments are valuable — they allow your skincare routine and treatments to evolve with your skin.

How accurate are online skin type quizzes?
Whilst they can provide a general indication, online quizzes lack the diagnostic tools and clinical expertise needed for accurate skin typing. A professional assessment using objective measurement tools provides far more reliable and actionable results.

Does ethnicity affect skin type?
Ethnicity influences factors such as melanin production, sebum levels, and collagen density, but it does not determine skin type in isolation. Individual variation within any ethnic group is substantial, which is why personalised assessment is essential.

How often should I have my skin professionally assessed?
We recommend a comprehensive skin assessment every six months, or more frequently if you are undergoing active treatment protocols or have noticed significant changes in your skin’s behaviour.