: Ageing is a natural phenomenon which is a fold, ridge and crease in the skin that occurs due to loss of body mass, poor hydration, disintegration of dermis and epidermis junction. The Skin ageing process involves many changes that occur due to the combination of both endogenous factors (gene mutation, cellular metabolism, and hormonal factor) and exogenous factors (U.V, pollutants, chemical, and toxins). In 1950, the number of older people were found to be almost 205 million across the globe. But this number almost got 4 times by the year 2012 and the number of older persons increased to a massive amount of 810 million. The ageing of the skin occurs due to various mechanisms like glycation, free radical, cell cycle, and cellular and molecular mechanism of skin ageing. In this review article, we have discussed the treatment, worldwide newer therapies and marketed formulation that are currently available for the reduction of skin ageing. The most promising and revolutionizing field of nanotechnology is mostly applied in the field of dermatology, cosmetics, and biomedical applications. Nanotechnology also plays a vital role in increasing the efficacy of the product.

Interpenetrating polymer network (IPN) is an enterprising drug delivery system, comprising of two polymers with several advantages like stability, biocompatibility, high swelling capacity and biodegradability which plays an important function in targeted and controlled drug delivery. IPN acquired appreciable focus in the pharmaceutical sector mostly for the last few decades because of their utility in biomedical applications like tissue engineering and drug delivery at the target site at desired rate. For the past few years, different types of polymers obtained from natural or artificial sources have been used to prepare the IPN, resulting in improved properties; thus, IPN is considered in the category of the novel technologies demonstrating the superior performances as compared to the conventional technique. IPN development leads to the formation of dosage form with reduced side effects and prolonged drug action. The current topic includes IPN, types of IPN, mode of preparation, applications, delivery systems and list of polymers employed in the synthesis of IPN.

In global market the demand for cosmeceuticals have shown an appreciable amount of enhancement over the past few years, especially the novel technology is more explored by the researchers as well as the marketers. Nanotechnology provides a wide platform for innovation and variation, the nanocosmeceuticals have shown an amplifiable amount of growth.Nanocosmeceuticals such as nanogels, nanoemulsions, liposomes, niosomes, solid lipid nanoparticles etc. have been used widely due to targeted delivery of the active ingredient, modification in shape, size, colour, penetration into the skin, controlled release delivery of the actives and much more. In global market there are a lot many Nanocosmeceuticals based products exist. Especially, Nanogels are three dimensional polymer network systems and they provides favorable characteristics to formulate, incorporate & fabricate hydrophilic as well as hydrophobic formulations which are required in many cosmeceuticals products. Nanogels can easily replace the conventional cosmeceuticals due to substantial amount of benefit which it provide such as their stimuli responsive behavior, pH responsive mechanism of drug release, small particle size, high water imbibing capacity , tremendous bio compatibility. The various applications of the nanogels in cosmeceuticals has been discussed in this review along with the general properties of the nanogel.

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