Embalming is the process of chemically preserving a dead body to slow decomposition, sanitize the remains, and restore a more natural appearance for viewing or transport. It involves replacing blood with preservative fluids, treating internal organs, and applying cosmetic techniques to create a lifelike presentation. While many people assume embalming is required after death, it is actually optional in most situations in the United States.
Why Embalming Is Done
The three core goals of embalming are sanitization, preservation, and restoration. Sanitization eliminates bacteria and pathogens that begin multiplying immediately after death. Preservation slows the natural breakdown of tissue, buying time between death and a funeral service. Restoration focuses on making the person look peaceful and recognizable for an open-casket viewing.
Practically speaking, embalming is most common when a family wants a traditional visitation or viewing before burial. It’s also used when the body needs to be transported over long distances or when there will be a significant delay between death and the funeral. Without embalming or refrigeration, visible decomposition can begin within a day or two depending on conditions.
What Happens During Embalming
Embalming is a multi-step process that typically takes a few hours. It begins with washing and positioning the body, then moves through two main phases: arterial embalming and cavity treatment.
Arterial Embalming
The embalmer makes a small incision, usually near the collarbone, to access a major artery and a nearby vein. A pump pushes embalming fluid into the arterial system while blood drains out through the vein. This circulates the preservative solution through the body’s vascular network, reaching tissues throughout. The amount of chemical needed is surprisingly small. In a typical case, only about 4 to 6 ounces of the active preservative are needed in the final stage of injection to produce the firmness and skin tightness associated with embalming.
Cavity Treatment
After the vascular system has been treated, the embalmer addresses the internal organs. A long, hollow instrument called a trocar is inserted through a small puncture about two inches left of and two inches above the navel. This tool is used to suction out gases, fluids, and semi-solid material from the chest, abdominal, and pelvic cavities, a process called aspiration.
Once aspiration is complete, a concentrated preservative fluid is injected back into those same cavities through the trocar. Typically one full bottle of cavity fluid goes into the chest cavity and another into the abdomen to ensure even distribution. The puncture site is then sealed with a small plastic cap.
Cosmetic Restoration
The final stage focuses on appearance. The embalmer sets the facial features, closing the eyes and mouth in a natural, relaxed position. Cosmetic work ranges from simple to highly involved depending on the circumstances of death.
Specialized foundations, concealers, and powders designed to adhere to post-mortem skin are applied to create a natural complexion. When illness or trauma has caused discoloration, the practitioner uses layered pigments to neutralize unwanted tones and match the person’s natural skin color. In cases where facial features have sunken or been damaged, modeling waxes and injectable compounds can rebuild contours in areas like the cheeks, temples, and lips. The goal is always a peaceful, recognizable appearance rather than a made-up look.
What’s in Embalming Fluid
The primary active ingredient in most embalming fluid is formaldehyde, a powerful preservative and disinfectant. Commercial formaldehyde solution (called formalin) contains 37 to 40 percent formaldehyde dissolved in water. This concentrated solution is then diluted into the working fluid that gets injected into the body.
Some embalmers use glutaraldehyde as an alternative or supplement. It achieves effective preservation at lower concentrations, typically around 2 percent, compared to the 5 to 8 percent range needed for formaldehyde to reliably disinfect. Glutaraldehyde tends to produce softer, more natural-feeling tissue.
Beyond the main preservative, embalming fluids contain a mix of supporting ingredients: humectants to prevent tissue from drying out, dyes to restore skin color, surfactants to help the fluid penetrate evenly, and sometimes phenol at about 2 percent concentration to speed up tissue fixation and reduce shrinkage. The exact formula varies depending on the condition of the body and the embalmer’s judgment.
Embalming Is Not Legally Required
Under the Federal Trade Commission’s Funeral Rule, funeral homes must disclose that embalming is not required by law except in certain limited circumstances. They cannot charge you for embalming without your prior approval, and they cannot tell you that embalming is mandatory for direct cremation, immediate burial, or a closed-casket funeral when refrigeration is available.
The required disclosure on every funeral home’s price list reads, in part: “Except in certain special cases, embalming is not required by law. Embalming may be necessary, however, if you select certain funeral arrangements, such as a funeral with viewing. If you do not want embalming, you usually have the right to choose an arrangement that does not require you to pay for it, such as direct cremation or immediate burial.”
Some states do require embalming in specific situations, such as when a body is being shipped across state lines by common carrier or when death resulted from certain communicable diseases. But these are exceptions, not the rule. If a funeral provider implies otherwise, that is a violation of federal trade law.
Environmental Concerns
Formaldehyde is a known carcinogen, and its use in millions of burials has raised questions about what happens when embalmed bodies eventually break down underground. A study examining cemetery soil in Middle Tennessee tested samples from burial plots dating back decades. Most samples showed formaldehyde levels below detectable limits, though a soil sample from a 1952 burial site did contain measurable formaldehyde at 2 milligrams per kilogram.
The researchers concluded there was a low likelihood of significant contamination reaching waterways or posing direct health risks to nearby communities. Natural processes like chemical degradation, dilution, and soil transport appear to break down or disperse formaldehyde over time. That said, research on this topic is limited. Few studies have examined how embalming chemicals interact with soil and groundwater over long periods, and none have thoroughly assessed the cumulative impact of large, active cemeteries.
Alternatives to Chemical Embalming
If you prefer to avoid embalming, several options exist. Refrigeration is the simplest: keeping the body cooled to around 38°F slows decomposition enough to allow a few days for arrangements, including a private family viewing in many cases. Dry ice can serve a similar function when refrigeration units aren’t available.
Natural or “green” burial skips embalming entirely. The body is prepared with simple washing and dressed in biodegradable clothing, then buried in a shroud or plain wooden casket without a concrete vault. This approach allows the body to return to the earth through natural decomposition.
Alkaline hydrolysis, sometimes called water cremation or aquamation, is a newer option gaining availability. It uses a water-based solution to accelerate the body’s natural breakdown, producing remains similar to cremated ashes. The Cremation Association of North America expanded its definition of cremation in 2010 to include this process, and it is now legal in a growing number of states. People who choose it often cite its lower environmental footprint compared to both flame cremation and traditional burial with embalming.