Complex sentence: Lactic acid is a carboxylic acid, whose chemical formula C 3 H 6 O 3 has its hydroxyl group adjacent to the carboxyl group, making it an alpha hydroxy acid (AHA).
Split into simpler sentences: Lactic acid is a carboxylic acid, with the chemical formula C 3 H 6 O 3. It has a hydroxyl group adjacent to the carboxyl group, making it an alpha hydroxy acid (AHA).