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The OSNT Skin Type

The OSNT Skin Type

OSNT Skin Type - Baumann Skin Typing System

The OSNT skin type is one of 16 unique skin types identified in the Baumann Skin Typing System, a dermatologist-developed skin typing system created by professor Leslie Baumann in 2005. If you have oily, sensitive, non-pigmented, and tight skin, your Baumann skin type is OSNT.

You don’t struggle with dark spots or signs of aging, but you may still want to prevent them. You can do it by building a hydrating and anti-fatigue routine featuring gentle, lightweight products that work well with oily sensitive skin.

This post is part of a series on the Baumann Skin Typing System, a dermatologist-developed skin typing system with 16 different skin types. If you are a OSNT skin type, keep reading; if not, take our quiz to find your unique skin type!

On this post:

What is the Baumann Skin Typing System?

The Baumann Skin Type Indicator, or Baumann Skin Typing System, is a skin type classification system created by dermatology professor Leslie Baumann. It was first unveiled in the book “The Skin Type Solution”, published in 2005, and it’s since taken the world of beauty by storm.

Rather than rely on the traditional skin types we’re all familiar with (think dry, normal, or oily skin), the Baumann system is based around skin characteristics. According to Leslie Baumann, each person can be placed on either side of these four parameters, resulting in a unique skin type:

  1. Oily (O) versus Dry (D)
  2. Sensitive (S) versus Resistant (R)
  3. Pigmented (P) versus Nonpigmented (N)
  4. Wrinkled (W) versus Tight or Unwrinkled (T)

What are the 16 Baumann skin types?

In the table below, you will be able to find the 16 Baumann skin types, divided by the two characteristics that are often easier to identify: Oily (O) versus Dry (D) skin, and Sensitive (S) versus Resistant (R) skin:

Dry Oily
Sensitive DSNT
OSNT → you are here
Resistant DRNT

The OSNT skin type: How to identify it

The OSNT skin type is oily, sensitive, non-pigmented, and tight (unwrinkled). Here’s what it all means:


The main difference between oily and dry skin is the amount of sebum produced by the skin, which, in turn, can affect the skin’s moisture balance. Oily skin is the least problematic of the two, according to the Baumann system, but it’s still not without issue. The major complaints associated with oily skin include excess shine, dilated pores and, occasionally, the development of acne.


There are four unique subtypes of sensitive skin in the Baumann system: acne, rosacea, stinging, and allergic. The four subtypes can be useful when building pathology-centric skincare routines (especially for the acne and rosacea subtypes), but you don’t have to go that deep if you don’t want to.

The important thing to keep in mind is that inflammation is the common trait among the four subtypes of sensitive skin. Because of this, sensitive skin will typically require more complex care to tackle the source of inflammation without triggering further reactions.


This skin type doesn’t have any concerns associated with unwanted pigmentation–think dark spots and patches, melasma, or post-inflammatory hyperpigmentation (PIH). This is a great situation to be in, and you may want to put some effort into maintaining it. A good way to prevent the development of dark spots is to use sunscreen every day–even when it’s cloudy!


“Tight” skin doesn’t have any visible signs of aging–yet. If you have a “tight” skin type, you have two possible options when building your skincare routine: you can keep things simple and make sure your skin stays healthy and hydrated, or you can turn it up a notch and focus on preventing the first signs of aging. The choice is yours, and it’ll depend on a lot of factors: your age, your lifestyle, the environmental aggressions you’re exposed to, and so much more.

How to care for OSNT skin

If your skin type is OSNT, you have oily, sensitive, non-pigmented, and tight skin. You don’t struggle with dark spots or signs of aging, but you may still want to prevent them. If that’s what you’re after, then you should consider putting together a OSNT routine that focuses on preventing damage and fatigue.

Make sure to pick lightweight and hydrating products. Here are some ideas:

  • A gentle cleanser that will purify your sensitive skin without triggering sensitivity or irritation;
  • A toner to rebalance your skin after cleansing;
  • An antioxidant product for daytime use. If you’d rather target excess oil and shine during the day, pick something with a mattifying and perfecting finish;
  • A lightweight hydrating serum;
  • A very high protection sunscreen for daily wear. Keep this one close to prevent the appearance of dark spots!

Discover your OSNT skincare routine now:

To get you started on your skincare journey, we’ve got two OSNT skincare routines for you to try. They both feature gentle, lightweight products that will help you keep your skin healthy and prevent the appearance of dark spots and signs of aging:

The Baumann Skin Typing System may seem a little complicated at first, but it’s a simple, intuitive way to classify skin types based on 4 characteristics that everyone can understand. If you are a OSNT skin type, you know your skin is oily, sensitive, non-pigmented, and tight; following the routines above, you will be able to care for your skin according to its specific needs. Still need a little help? Then don’t hesitate to contact our beauty experts; we’ll be glad to help!

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