literature embodiments disclosed herein can also include viscosity increasing agents appropriate agents include without limitation methylcellulose polyvinyl alcohol polyvinyl pyrrolidone hyaluronic acid and chondroitin sulfate certain embodiments disclosed herein can include preservatives including without limitation benzyl alcohol benzalkonium chloride chlorhexidine chlorobutanol methyl propyl or butyl parahydroxybenzoic acids phenylmercuric salts including without limitation nitrate chloride acetate and borate and betain various other additives may be included in the compositions of the present invention in addition to those identified above these include but are not limited to antioxidants astringents perfumes emollients pigments dyes humectants propellants and sunscreen agents as well as other classes of materials whose presence may be cosmetically medicinally or otherwise desirable the compositions and formulations may also be taken in conjunction with minoxidil and propecia compositions can also be formulated as u201c slow releasing u201d formulations so that the activity of active components is sustained for a longer period of time between treatments while particular embodiments disclosed herein can include each of the components discussed above other particular embodiments can be required to be u201c substantially free u201d of one or more of these components in various combinations u201c substantially free u201d as used herein means that the component is not added to.