This is very good to nourish and moisturize leather items and leave them soft and supple. It is very effective and wonderful for extreme dry, cracked and brittle leather. It is also protective and water proof. It is specially formulated viscous oil with water proofing properties and it penetrates in leather and makes it soften and preserves leathers. This is not suitable for aniline or untreated leather. Depending on use, it can be lasts up to 6 months.