Mixture of lemon juice and baking soda: surprising effects

The combination of baking soda and lemon juice has become a popular home remedy. Some people claim that baking soda and lemon juice can improve the skin, treat heartburn and whiten teeth. Several scientific studies have looked at the health benefits of baking soda and lemon juice separately, but there is not much research to support the combined effects of these two ingredients.

This article highlights some of the potential benefits of consuming blends of baking soda and lemon juice.

A note on pH

A baking soda solution is alkaline, while lemon juice is acidic. The idea of ​​combining baking soda and lemon juice is based on the basic principles of acidity and the pH scale. Science uses the pH scale to measure the acidity of a solution. A solution can have a pH between 0 and 14.

The lower the pH, the more acidic the solution is, so:

PH levels below 7 indicate the acid solution
A pH above 7 indicates an alkaline or basic solution.
Neutral solutions, such as pure water, at a pH of 7.
Baking soda, also known as baking soda, is a base. This means that when baking soda is dissolved in water, it forms an alkaline solution. For example, a 0.1 molar solution of baking soda has a pH of about 8.3. Lemon juice contains citric acid and has a pH of about 3. Adding baking soda to lemon juice will increase the pH to produce a more neutral solution.

Skin care

Usually, the skin has a slightly acidic pH of about 5.7. Basics, such as baking soda, increase the pH of the skin. Higher pH levels can disrupt the function of the skin barrier, can cause dryness, excessive production of sebum and acne. Lemon juice seems to have obvious applications in skin care, as it contains concentrations of vitamin C and citric acid, both of which have strong skin benefits. Citric acid is an alpha-hydroxy acid (AHA) that manufacturers use bravely in chemical peels. However, skin cells naturally replenish water-soluble molecules, such as vitamin C. This means that very little vitamin C is effective in the skin. The high acid content of lemon juice can lower the pH level of the skin. Poor pH can cause skin irritation, hyperpigmentation and sensitivity to UV rays.


Using a homemade mixture of baking soda and lemon juice can be harmful to the skin. Instead, try using neutral cleansers or chemical peels that contain AHAs, such as glycolic acid.

Gastric acid neutralizer

Citrus fruits are a rich source of citric acid. Excess gastric acid can cause uncomfortable symptoms such as heartburn, vomiting and indigestion. Many people with excess gastric acid take over-the-counter antacids to relieve their symptoms. Consuming baking soda and lemon juice together can also neutralize gastric acid in the same way as an antacid. A 2017 study looked at the antacid effects of various foods. The authors of this study created an artificial gastric acid with a pH of 1.2. Although lemon juice itself has almost no effect, baking soda has been able to neutralize synthetic gastric acid.

Multiple over-the-counter antacids contain baking soda and citric acid. Lemons and other citrus fruits are rich sources of natural citric acid.
When a person mixes lemon juice and baking soda, citric acid reacts with sodium bicarbonate to produce a buffer called sodium citrate. A buffer is a weak acid or base that prevents radical changes in pH. It is good that lemon juice does not neutralize gastric acid, it can help stabilize the pH level in the stomach.


Using baking soda and lemon juice to combat excess gastric acid can be a good home remedy because over-the-counter antacids contain similar ingredients. However, it can be difficult to mix the right proportions of baking soda and lemon juice.

Here are some other home remedies to reduce excess gastric acid:

avoid or reduce acidic foods and beverages
limit caffeine consumption
limit alcohol consumption
eat smaller meals
drink more water
enough sleep.
People suffering from acid reflux or severe or persistent heartburn should consult a doctor or gastroenterologist.

Teeth whitening

Many oral hygiene products contain baking soda because of its antibacterial properties and its ability to remove plaque without eroding tooth enamel. Baking soda can also help remove superficial tooth stains, making it an effective and affordable alternative to traditional teeth whitening. However, there is little evidence to suggest that the addition of lemon juice to baking soda enhances the dental benefits of baking soda.

A 2017 report that looked at 21 studies found that baking soda-containing toothpaste effectively and safely removes tooth stains. However, the report did not include studies involving lemon juice. It is important to note that lemon juice contains strong concentrations of citric acid and ascorbic acid, or vitamin C. Acidic compounds can erode enamel and cause tooth decay. However, the combination of baking soda and lemon juice should produce a pH-neutral solution.


Mixtures of baking soda and lemon juice are popular health tips. People use them especially for skin care, teeth whitening and the treatment of heartburn and indigestion. However, scientific evidence of the benefits of these mixtures is currently limited, making it difficult to draw definitive conclusions. Baking soda and lemon juice both have several health benefits. However, the combination of the two ingredients without specific dosage or directions for use may cause undesirable side effects.

* Press the effort to transmit health knowledge in a language accessible to all. In NO CASE, the information given cannot replace the opinion of a health professional.

Do you mean content?

Receive every day our latest publications for free and directly in your mailbox

Leave a Comment