Osmo Tannin Spot Remover (6602) is a specialist cleaner designed to remove tannin stains and grey discolouration from exterior timber surfaces before applying Osmo exterior finishes. Tannin bleed is common on oak, western red cedar, and other tannin-rich species, particularly after weathering or rain exposure, and can cause unsightly dark staining if not treated before finishing.

Applied directly to the affected area, it neutralises and lifts tannin deposits, restoring the timber to a clean, even surface ready for oiling or staining.

• Use: Tannin stain remover — pre-treatment before exterior finishing
• Application: Apply to affected area, allow to work, then rinse off
• Suitable for: Exterior timber surfaces affected by tannin bleed or grey discolouration
• Compatible with: All Osmo exterior oil and colour finishes
• Size: 250ml

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