I must preface this by stating that I am not an expert in the field of chemistry and have not considered this matter myself. Consequently, I have sought the input of another individual. Furthermore, it is evident that you have already invested a considerable amount of emotional energy into this issue. Therefore, I recommend that you attempt to regulate your psychological state to a greater extent.
Firstly, I will address the issue that I have consulted on. The key to soap-and-toothpaste-wont-clean-properly-and-i-end-up-rinsing-for-a-long-time-what-should-i-do-12149.html" target="_blank">rinsing off soap and toothpaste is to ensure that there are no visible residues, that the skin or mouth feels fresh, and that there is no odor or discomfort. There are a few ways to check, for your reference:
1. Observe the foam and water flow. Following the use of soap or toothpaste, the absence of visible foam or particles in the rinsing water indicates that the majority of residue has been removed, thus rendering the procedure satisfactory. In the event of uncertainty, a further rinse is recommended.
2. Sensory Evaluation: For soap, after rinsing, the skin should exhibit a clean, non-greasy sensation, without any tightness or a particularly strong residual fragrance. For toothpaste, after rinsing, the mouth should feel fresh, without any residual taste or grainy feeling associated with the toothpaste.
3. Visual inspection: After using the soap, one can visually inspect the mirror to ascertain whether any residual foam or residue remains on the skin. Similarly, with toothpaste, one can open their mouth and visually examine their teeth and mouth to determine if any white or colored toothpaste residue persists.
Psychological analysis reveals that the individual's mental logic is that inadequate rinsing of soap and toothpaste can have a significant impact on health. This may have been influenced by past information, a scene in a movie or novel, or an instance when inadequate rinsing resulted in illness. It is also possible that during childhood, parents employed fear tactics to encourage proper rinsing, leaving a profound impression on the subconscious.
The solution is to have faith in the scientific method. First, products such as soaps and toothpastes that have been approved for sale by the relevant authorities have undergone rigorous safety testing and have been deemed safe for use. Second, if an individual were to consume one tube of toothpaste over the course of their lifetime, it would not result in any adverse effects. After conducting an analysis in accordance with the three inspection methods that I have consulted, it can be concluded that the total amount of residues from brushing your teeth on a daily basis for the entirety of your life is not even close to the amount present in one tube of toothpaste. Third, if you still have reservations, you can opt for products designed for infants, which are even more stringent. Even if an infant were to ingest them by mistake, it would not cause any harm.
It is beneficial to have doubts to a certain extent. When faced with uncertainty, it is important to seek and utilize the appropriate sources of information to gain clarity. It is unproductive to dwell on doubts without seeking the most accurate and reliable answers. This is an open forum for questions, so please feel free to ask.
What is your opinion on this matter?


Comments
I usually rinse off soap and toothpaste until I feel like it's all gone, maybe around 30 seconds. It seems long enough for me to ensure everything is clean.
For me, rinsing thoroughly is important, but I find that about 20 seconds does the job for both soap and toothpaste. It feels just right without being excessive.
I tend to trust my senses; when the water runs clear and there are no more bubbles, I consider it clean. This usually takes about a minute, which might be on the longer side.
I don't worry too much about timing; I simply rinse until I can't taste the toothpaste and the soap feels completely off my skin, which usually happens pretty quickly.
I've heard that 15 to 20 seconds is a good rule of thumb for rinsing. It's enough to get everything out without wasting water, so I try to stick to that.