Using Peaty's Dry LinkLube is easy. First, make sure your bike chain is clean. Hold the unique tall and slim bottle like a pen. The rounded tip of the applicator cap can be rolled smoothly over the chain. Apply the lube evenly along the chain. The blue indicator dye will let you know when it's dry and you're good to ride. One application can last up to around 300km or 190 miles, but this may vary depending on conditions. Remember, this lube is biodegradable, so it's an eco - friendly option. To maintain your chain, re - apply the lube when you notice the performance starting to decline or when the blue dye fades. Store the bottle in a cool and dry place to keep the lube in good condition.