In a significant study aimed at improving the overall health of the skin, Indian research teams have successfully used plants like Neem and Tulsi to dye fabrics and make them bacteria free.

Natural colours obtained from the dry leaves of neem (Azadirachta indica) and Tulsi (Ocimum sanctum) are used to dye fabrics made of silk and wool, and cellulose fabrics like rayon and jute. Neem and Tulsi dyes not only gave fastness to the colour, but also kept microorganisms at bay, thus protecting the wearer from a variety of bacteria, fungi and viruses. Moreover, the colours obtained from these Indian medicinal plants are non-toxic, eco-friendly and biologically compatible with the human body. Applications for patents have been filed for the medicinal dyes.

A team of private researchers from Hyderabad used Tulsi leaves and stem to dye fabric. The team found that the healing properties of Tulsi were retained in the garments. The dyes obtained from Tulsi gave uniformity of colour, sheen and lustre. The dyes had anti-microbial properties.

Rashi Agarwal and her team from the clothing and textiles department of Pantnagar University tested colours obtained from dry neem leaves in acidic, alkaline and aqueous media. The team found that light colours are obtained at two per cent concentration of neem leaves. At 5 per cent concentration, dark colours could be obtained.

Neem contains a tannin that helps in improving the fastness of the medicinal dye. Since the colour goes deep into the yarn, there will be no colour bleeding. The medicinal properties remain in the fabric and keep the skin healthy, preventing bacterial attacks.