unbelievable? Sunscreen interferes with endocrine?

A recent well-known media disclosed that a sunscreen ingredient (OMC, octyl methoxycinnamate, UV and sunscreen) can affect the body’s secretion, for pregnant mothers and lactating mothers, and It is best not to use baby children.

I can't believe it? Sunscreen interference Endocrine?

Does this caution have any reason?

Sunscreen is indeed risky

First of all, it should be pointed out that sunscreen is a product that protects your skin and is an expedient to protect your skin when the sun is too strong. In fact, although the sunscreen itself has a certain risk (reviewed by the regulatory department to ensure that the risk is low enough), under the premise of correct use, it can reduce the damage of excessive ultraviolet rays to the skin.

The risk of sunscreen itself, one of which is due to the thick and sticky nature and the physical barrier to skin closure caused by multiple application, and the second is the risk of chemical sunscreens used.

The first risk is mainly caused by the dosage form of the sunscreen itself. If your skin condition is unstable, you should try to avoid hatching with a hat and a parasol. The sun is too strong. Choose a thin, low SPF and PA sunscreen – especially those that often inexplicably start some rashes, or often Sensitive skin friends who feel hot and stinging skin.

What we are talking about today is the second risk – chemical sunscreen.

Chemical sunscreens can enter the body

Since sunscreens have been widely used, more than 30 years have passed, we Research on the understanding of ingredients in sunscreens is also increasing. The most common sunscreens are less than 30 kinds, divided into [p-aminobenzoic acid], [salicylic acid], [cinnamic acid] and [camphor derivatives] (of course, there are physical sunscreens) Species, [titanium dioxide] and [zinc oxide]) – Since there are not so many types, you can study the risks little by little.

To study the effects on the human body, it is first necessary to know how high these substances can be in our bodies – these are the directions of [analytical chemistry] research. Recently, more and more warnings have been received. The main reason is the result of the continuous progress of [analytical chemistry] – things that were originally thought to be non-existent in the human body can now be measured with more sophisticated instruments.

For example, the aforementioned [octyl methoxycinnamate], also known as OMC, is the most widely used chemical sunscreen found in breast milk. How high is the content?

445 ng per gram.

I know that everyone has no concept, so the argument that everyone can understand is that there is a chemical sunscreen that is about two drops of water in the middle of a bathtub.

It still sounds a bit more.

In other words, no matter how ingeniously designed by the formulator, the chemical sunscreen in the middle of the sunscreen can penetrate into the body through various channels.

Since there is a risk of coming in, scientists are starting to use mice or fish to study how it can affect us.

Results of animal experiments

Many small animals made sacrifices.

From the current research results, UV sunscreens can affect the reproductive system, puberty development and survival rate of offspring in mice and fish. A part of the UV sunscreen can act on the animal’s [estrogen receptor], [androgen receptor], and [progesterone receptor].

Speaking people, that is, these guys interfere with the operation of the animal’s endocrine system.

It’s over, it seems that we can’t use sunscreens with chemical sunscreens.

Don’t worry about people

A lot of articles say that sunscreens, especially those containing [octyl methoxycinnamate] can not be used in pregnant women and lactation, probably based on these animal experiments.

However, if you look closely at the papers in these animal experiments, you will find that during the experiment, the exposure of these animals to sunscreens is much higher than the amount that humans may be exposed to in their daily lives. Moreover, the inferences from quite a few experimental results are not consistent.

The results of these animal experiments are far from enough to allow the FDA or CFDA regulators to resolve to remove the OMC from the list of raw materials, and even rarely issue warnings about this.

Before I was still working at my old club, I had consulted a similar problem with the company’s [toxicologist] (well, there is such a group of people who pondered this thing every day). The reply is: no matter how it is calculated, even if it is pregnant mother and lactating mother, it is no problem to use sunscreen containing chemical sunscreen properly.

Use reasonably

Do not worry too much about the sunscreen in sunscreen affecting endocrine, even pregnant mothers and lactating mothers.

But if you can’t help but worry, this kind of fear will hurt your baby and your baby’s health – so if you’re reminding you to use skin care products all day long, it’s better to be more generous. No need to streamline skin care. Protecting yourself from fear is a protection for your baby.

Another point to note is that sun protection is not as high as SPF and PA. For very short periods of exposure to less intense sunlight, you can protect yourself with a single umbrella.

For a large number of white-collar workers working indoors, when using sunscreen, do not over-close the skin (let the skin breathe), try to combine hats and umbrellas, choose not too high SPF and PA The value of this method (those who can’t move 100+ SPF should probably be reserved for those who are really long-term outdoors).

A few days ago, a friend asked me if the moonlight needs sunscreen – I was paralyzed at the time, does moonlight hurt us?

When we have it, we will be overkill.

It is very important to find the right balance.