Nanoparticles stabilize boswellia sacra extract (frankincense extract) in high dosage, transport the active agent into the skin and enable skin application in spite of the resinous property of boswellia. Frankincense extract inhibits the expression of metalloproteinases, which induce the degradation of collagen. Metalloproteinases are activated when the skin is strongly stressed by UV radiation. Furthermore boswellia inhibits the 5-lipoxygenase, a key enzyme of inflammation processes. Frankincense encapsulated in nanoparticles is not only used for antiaging skin care, but also for accompanying care of inflamed skin disorders and especially actinic keratoses. Phytosteroles ("unsaponifiables") from avocado oil extract support the care of barrier disordered skin.