Cetol HLS Plus is a low build, solvent-borne, semi-transparent woodstain for use on exterior softwood and hardwood substrates such as cladding, fascias, soffits, rough sawn timber, fencing, garden furniture, handrails and exterior decking. Cetol HLS plus is applied as a base stain prior to the application of higher build finishes such as Cetol Filter 7 plus on smooth planed exterior joinery. Cetol HLS plus should not be used alone as a finish for hardwood timbers other than decking