The high friability of the cosmetic pumices is undesirable as it damages the material structure and limits the lifespan of the product.The synthesised RPU Fexhibited low friability compared to the analysed commercial samples as the total mass loss did not exceed 2.5% (Table 6). The friability increased for the materials obtained using the higher content of the vegetable polyol with the most significant rise between the 50PP/50RP and the 25PP/75RP samples(from0.15±0.08%to1.89±0.53%,respectively).The increased friability of the RPUF containing more vegetable polyol could be attributed to the lower apparent density as well as the lowerdegree of physical crosslinking in the 25PP/75RP and 100RP materials. The dimensional stability of the RPUF is closely related to the compressive strength (Prociak et al., 2014). Changing the external temperature affects the pressure of the gas trapped in the cells of thefoam,which generates the pressure difference between the cell interior and the atmosphere. In order to maintain the dimensional stability this pressure difference has to be lower than the compressive strength of the foam. The maximum pressure difference is approx. 100kPa, assuming the internal gas pressure is close to zero, which suggests that the RPUF characterised by the compressive strength greater than 100kPa should not exhibit significant deformation(Prociaketal.,2014).In the case of examined materials the compressive strength was in the range of 580–775kPa, which resulted in a high dimensional stability in water at elevated temperature as well as a high resistance to aging conditions,which was similar to the dimensional stability of the commercially available cosmetic pumices. Additionally, the synthesised RPUF exhibited higher aging resistance(0.05–0.1%)compared to the analysed commercial products (0.1–1.2%) (Table 6). The cosmetic pumices should exhibit the low water absorption, which allows for an easy drying of the product as well as hinders the possibility of the growth of bacteria and fungi.The synthesised RPUF demonstrated low water absorption (Table 6) comparable to the analysed commercially available products (4–12%). The water absorption of the synthesised RPUF materials was decreasing with the growing content of the vegetable polyol, which could be explained by the hydrophobic characteristics of fatty acids introduced in polyols (Petrovi´c et al., 2005; Prociak et al., 2014 Prociak et al., 2014). The hydrophobic properties resulting from the introduction of the vegetable polyols to the RPUF could be considered as a significant improvement limiting the growth of bacteria and fungi inside the pores. The cosmetic pumices are intended to be utilised in the contact with human skin, therefore the toxicity of the applied materials had to be excluded.The results of the biological tests presented no toxicity of the synthesised RPUF towards the human monocyte cell line as none of the samples exceeded the11%drop of the mitochondrial potential of the analysed cell line. The increasing content of the vegetable polyol resulted in the rise of the biocompatibility of the RPUF (Table7).The obtained results suggest the applicabilityof the obtained materials for the operation in the contact with human skin.