Efficacy testing: cellulite reduction, stretch mark prevention

Cellulite and stretch marks

Cellulite is a localized skin condition of subcutaneous fat and connective tissue with the typical visual appearance of dimpled skin. Cellulite is a common aesthetic problem, which affects mostly women, rarely men. It usually appears after puberty and worsens with age. The common sites prone to cellulite are thighs, buttocks, hips, abdomen, the upper part of the arms and knees. Although cellulite may be found in areas, with excess adipose tissue, it is not necessarily correlated with obesity.

The formation of cellulite can be divided into 4 stages. The early stage of cellulite is characterized by more permeable capillary blood vessels, which lead to edema in the adipose tissues. Additionally, disruption in lymph circulation hampers removal of accumulating fluids. Next stages include hampered blood circulation due to aggregation of adipose cells and the growth of collagen fibrils. Adipose cells aggregate into micronodules and these later aggregate into macronodules. At this late stage of severe cellulite, it is possible that the skin is more sensitive as the nerves may be squeezed by these larger aggregates.

Stretch marks are skin scars that appear due to quick stretching or shrinking of the dermis. The occurrence of stretch marks involves physical stress, hormones and structural alteration of collagen and elastic tissue.

Stretch marks can appear during puberty, pregnancy, rapid weight gain or loss, during a rapid muscle growth through weight training or also as a result of medication (corticosteroid use) or certain medical conditions. The common places where they may occur are abdomen, breasts, hips, buttocks and thighs.

Sings of cellulite and stretch marks

Cellulite is visually seen as orange peel look of the skin. Areas with cellulite are usually colder, with increase skin sensibility and decreased skin resistance upon mechanical stress.

Stretch marks are firstly seen as pink or red marks, which can appear slightly raised on the skin surface and can also be itchy. Later, the colour of stretch marks fades, and the marks sink beneath the skin surface.

Claims related to cellulite and stretch marks

Cellulite reduction

Anti-stretch marks

Cosmetics testing
Cosmetics testingCosmetics testing

Measurement principles and instruments

To prove cellulite reduction and stretch mark prevention claims we measure the following parameters using the following instruments:

Evaluation of skin texture with microcamera

  • Visioscan VC 20plus (Courage + Khazaka Electronic)

  • Cortex Dino-Lite (Cortex Technologies)

  • Microcamera SoftPlus (Callegari)

See our results

Visioscan VC 20plus

Cosmetics testing

Example of skin texture

Cosmetics testing

Example of skin texture

Efficacy testing protocol is prepared for each product individually with close cooperation with the sponsor. Based on the claims, usage regime and efficacy expectations, we prepare a protocol that is suitable for the type of product and can confirm product efficacy. The studies can be performed over a different time period (from a few days to several weeks or months) depending on the claim and type of measurement.

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