Methods of screening rinse-off personal care compositions can include the use of explant skin in combination with measurements for moisture and/or cell proliferation.

Disclosed herein are synthetic leathers, artificial epidermal layers, artificial dermal layers, layered structures, products produced therefrom and methods of producing the same.

The present invention address the problem of providing a transparent skin sample by removing epidermis via enzymatic treatment.

A method for decellularization of a skin tissue according to an embodiment of the present invention comprises: a step of preparing a skin tissue to be decellularized; a peeling preparation step of treating the skin tissue with a first solution containing trypsin; and a peeling step of removing subcutaneous fat from the skin tissue after the peeling preparation step.

Disclosed is a microfluidic device implanted in an ex-vivo skin explant to control perfusion, diffusion and collection of molecules over long periods. Also disclosed is a method for assessing permeation or infusion of a biomarker of interest through the skin and to a method for detecting and/or quantifying a biomarker of interest contained in the liquid secreted by the ex-vivo skin explant.

Provided herein are methods and systems for bio-printing of three-dimensional organs and organoids. Also provided herein are bio-printed three-dimensional organs and organoids for use in the generation and/or the assessment of immunological products and/or immune responses. Also provided herein are methods and system for bio-printing three-dimensional matrices.

The present invention provides a pigmentation skin model that comprises: a first cell group containing fibroblasts damaged by light irradiation, said first cell group being seeded on a first cell culture substratum; and a second cell group containing melanocytes and keratinocytes, said second cell group being applied onto the first cell group. The present invention also provides a method for producing the pigmentation skin model, and a method for evaluating a factor for treating or preventing pigmentation of the skin, said method comprising using the pigmentation skin model.

The present disclosure concerns an in-vitro full skin model which comprises a dermal equivalent and epidermal equivalent as well as from about 1 to about 100 three-dimensional sweat gland equivalents with respectively from about 500 to about 500000 sweat gland cells as well as a diameter of respectively from about 100 to about 6000 μm on a supporting layer. Furthermore, the present disclosure concerns the production of the full skin model as well as the use of this model as an in-vitro model, in screening methods as well as for in-vitro evaluation of the influence of cosmetic substances on the inhibition of sweat secretion as well as body odor.

The present disclosure is directed to viable bioengineered skin constructs.

The present invention describes a method for producing de novo papillae comprising the steps of a) providing isolated dermal papilla fibroblasts (DPF) from at least one dermal papilla (DP) from at least one hair follicle, b) providing isolated connective tissue sheath fibroblasts (CTSF) from at least one hair follicle and c) co-culturing the DPF with the CTSF under substantially non-adherent cell culture conditions to form spheroid cell aggregates.