Rhino Skin is a potent potassium silicate that significantly protects and strengthens the cell structure of your plants, making them more resistant to heat, drought and, most importantly, boosting their immune defences against pests. Plants use silicon to build strong structures to support the growth of flowers and fruit, but often in hydroponics this element is only supplied for a short time. With Rhino Skin, you provide your plants with silicon in an easily assimilated form, resulting in stronger plants, more trichomes and greater resistance to disease or pests.