Introduction: Currently the most common chemicals used to make soap are less safe for human skin, so making soap containing natural ingredients that are safe for the skin needs to be developed. Shellfish (anadara granosa) have a high enough collagen content and can be used as a natural raw material for making soap with the addition of essential oils of etlingera plants that contain secondary metabolites and function as anti-oxidants. Research on Transparent collagen soap from shellfish (anadara granosa) with essential oils from plant (etlingera calophrys (k.schum.)) has been successfully carried out. The study aims to determine the process and formulation of making collagen soap from shellfish with the addition of essential oils from etlingera plants and to find out the results of collagen rendament of shellfish and rendament of essential oils of etlingera plants. Methods: The method used in making collagen soap is a simple mixing method. The parameters observed included analysis of shell collagen yield, etlingera essential oil yield and chemical soap test. Results: Shellfish collagen rendament was 9.23 percent and essential oil rendament was 23 percent. The results of testing the chemical properties of collagen soap are produced according to the Indonesian National Standard (SNI). Moisture value is 12.53 percent, saponification value is 258mg KOH/gram of oil, and the acidity value has a pH of 10. Conclusion: The results of this study show transparent collagen soap from shells (anadara granosa) with essential oil of the plant (etlingera calophrys) is safe to use.