1, preparation materials: find a suitable container and add a proper amount of detergent, which usually takes about 5-6 spoonfuls. Add the right amount of sugar, which usually takes about 2 spoonfuls. Add an appropriate amount of water, the amount of water should be determined according to your own needs, generally around 100 ml.

2. Stir evenly: completely dissolve the detergent and sugar in water. Stir well until the detergent and sugar are completely dissolved in water.

3. Add food pigment (optional): If you want to make the bubble liquid colorful, you can add a little food pigment.

4. Adjust the consistency of the bubble liquid: If you want a more stable bubble, you can add some glue. If you want something with lighter bubbles, you can add some glycerin.

5. Usage: Pour the prepared bubble liquid into the spray bottle, and you can start playing with bubbles.

Unsafe factors in making bubble liquid include:

1, composition problem: the main components of bubble liquid are surfactant, alkaline substance, glycerol, etc. Among them, surfactants may cause skin allergic reactions in some cases, such as itching and redness. Alkaline substances such as sodium hydroxide may irritate the skin and eyes and even corrode the skin. Therefore, attention should be paid to the quality and concentration of the ingredients when making and using bubble liquid.

2. Bacterial contamination: There may be bacterial contamination in the self-made bubble liquid. If unclean liquids or containers are used in the production process, or if hygiene is not paid attention to in the production process, bacterial pollution may be caused. Using bubble liquid containing bacteria may cause infection and disease, so pay attention to cleaning and disinfection.

3, chemical poisoning: if the bubble liquid contains some toxic chemicals, such as benzene, methanol, etc. , may cause poisoning reaction. These chemicals can enter the human body through breathing and skin contact, which is harmful to human health. Therefore, when making and using bubble liquid, we must be careful not to eat by mistake or contact for a long time.

4. Allergic reaction: Some people may be allergic to some ingredients in the bubble liquid, such as spices and dyes. The use of foam liquid containing these ingredients may cause allergic reactions, such as dyspnea and rash. Therefore, we must pay attention to the ingredient list and allergic history before using bubble liquid.

5. Danger of suffocation: For younger children, self-made foam liquid is in danger of suffocation. If a child accidentally inhales the respiratory tract while playing with bubble liquid, it may lead to suffocation or even death. Therefore, attention should be paid to the safety of children when using bubble liquid to prevent children from eating or inhaling bubble liquid by mistake.