ANTI-SHINE

Skin shine is caused by excessive sebum production, which causes skin oil to accumulate on the surface and reflect light — anti-shine products help to reduce this effect.

What characterizes oily skin?

  • Shiny skin, especially in the T-zone (forehead, nose, chin)
  • Enlarged pores that can become clogged more quickly
  • Higher risk of blackheads and pimples
  • Possible tendency to acne

What are the possible causes of oily skin?

There can be many causes of oily skin:

  • genetic predisposition
  •  hormonal changes, e.g. during puberty, menstruation, or pregnancy
  • stress
  • unhealthy diet

These factors can further stimulate sebum production and affect the appearance of the skin.

EXPERTS EXPLAIN

Our study designs for investigating skin shine

At the Study Center, we use various methods to assess skin shine and oiliness. These are often used in combination to test the effectiveness of a product or ingredient.

This can involve assessment by experts or by the study participants themselves, as well as physical measurement methods such as sebumeters, sebum tapes, or glossmeters.

For objective assessment by our experts or semi-objective assessment by the study participants, visible or perceptible skin characteristics are evaluated on a scale. 

The different measurement methods determine different criteria:

 

The Sebumeter

The Sebumeter is used to photometrically determine skin oiliness or surface sebum.

A test strip with a matte surface is placed on the skin for 30 seconds. The strip becomes transparent upon contact with sebum. A sensor in the device measures the degree of transparency and uses this to determine the sebum content in μg/cm² (measuring range: 0 to 350). 

The sebum tape

A sebum tape allows for visual assessment of sebum production.

The opaque, adhesive sebum tape becomes transparent during the 30-minute contact time and shows small dots that represent sebum secretion. The tapes are stuck onto a black card and visually assessed using a descriptive scale.  

The Glossmeter

We can determine skin shine by measuring the light reflection on the skin surface using a Glossmeter.

The device illuminates the skin from a flat angle and measures how much light is reflected directly and indirectly from the skin surface. The measured value provides information about the shine of the skin surface

Based on these studies, we develop and confirm claims — i.e. advertising statements —
for our products with the help of our study participants.