If on skin (or hair): take off immediately all contaminated clothing. Rinse skin with water/shower.. Pour the contents of the sachet directly down the plughole directly at arm's length, away from face and body. The best way to narrow down the best option for you would be to consider a handful of key things. Hopefully this handy breakdown of key features to keep an eye out for may help you to narrow down your choice. Do you want speedy results? Buster also uses crystals instead of liquid, which is much safer when it comes to avoiding any potential accidents that could take place when handling the harsh chemicals that make up the liquid products. Causes severe skin burns and eye damage. Keep out of reach of children. Read label before use. Wear protective gloves, protective clothing and eye protection. Do not breathe dust/fumes.