In an earlier study we showed that lactic acid has an etching effect on both enamel and dentin and the possibility of substituting lactic acid for phosphoric acid as an enamel and dentin conditioner might be considered. This study reports the follow-up of lactic acid as an enamel and dentin conditioner. Twenty cervical abrasion lesions in ten patients were restored with All-Bond 2 bonding agent and Charisma composite. 20% lactic acid solution replaced the phosphoric acid in the bonding agent and used as an enamel and dentine conditioner. The teeth were examined visually and tactually under 3 diopter magnifying loops with mirror and explorer. All teeth were examined for full retention, partial retention, or complete loss of composite from the surface. Impressions were randomly taken of some of the cases, at base line and recall visits. Models were prepared in die stone and examined visually to corroborate the clinical findings. Restorations were re-examined at 1 months, 2 months, 3 month, and 6 months. The results are similar to that obtained with phosphoric acid when use as an enamel and dentin conditioner. This study suggests that lactic acid could be used in place of phosphoric acid.