I don't know if it's pregnancy that makes people happy (scam), Rihanna came out to draw cakes for fans again.
6 years, 6 years... Riri has not only founded its own beauty brand, lingerie brand, fashion brand... I also took the time to have a baby, but there was no new song.
Many fans have waited for her R9 (ninth album) to wait for the illusion to come.
However, Riri himself has no conscience and is very good, and at the same time as the double harvest of love, he is also beautiful and hot mother.
Is it true that the physique of celebrities is different from that of us ordinary people? How come each pregnancy not only does not have stretch marks, but also does not grow spots?
According to statistics, about 70% of women will grow spots during pregnancy, only a few will not, and adults have also seen many netizens on the Internet who are plagued by long spots during pregnancy.
I would like to take this opportunity to talk to you about the "long spots during pregnancy" today.
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Why is it easier to "grow spots" during pregnancy?
Plaque is actually a super common skin disease characterized by hyperpigmentation of certain areas of the face.
In layman's terms, it is too much pigment accumulation, and finally it comes out.
Pregnancy spots are usually yellow or brown and are symmetrically distributed on either side of the cheeks.
Although the cause of the plaque is not yet clearly definitive, most studies believe that the causes stand out from these three points: genetics, sun exposure, and endocrine disorders.
But in addition to these three points, the long spots during pregnancy have their own unique reasons.
#情绪因素
Emotional instability affects the release of MSH (melanocyte hormone) by the pituitary gland.
During pregnancy, the mood of the mothers is affected by hormones, often like the fund of adults, ups and downs...
MSH acts primarily on melanocytes, stimulating the conversion of tyrosine from melanocytes to melanin, causing pigmentation in the skin.
Figure | "Causes and Pathogenesis of Melasma"
Similarly, if you are not pregnant, but the work life is too stressful, the mood swings are large, staying up late, and the irregularity of life will also affect the release of MSN by the pituitary gland, resulting in long spots.
#荷尔蒙因素
Have you noticed that women who get pregnant in the summer are more likely to grow spots than in winter?
This is because melanocytes are very sensitive to hormones.
Levels of estrogen and progesterone rise in women during pregnancy, which happen to be the main source of estrogen.
Hormones promote melanocyte activity, which in turn is more affected by sunlight, so summer pregnancy spots are more severe.
Speaking of which, a new knowledge point is implanted: long-term oral contraceptives are also more likely to grow spots.
Because the main components of the current contraceptive pill are estrogen and progesterone.
After taking the contraceptive pill, estrogen and progesterone increase, so that the hypothalamus mistakenly thinks that you are pregnant, thereby inhibiting the development and discharge of follicles, achieving the purpose of contraception.
But it also misled melanocytes, so melanocytes came out and stumbled...
In view of the above factors, it can be seen that long spots during pregnancy cannot be completely avoided.
We mentioned the top priority of preventing pregnancy spots, "sun protection", which may not be perfect.
Not only because everyone is more cautious during pregnancy, but also "hard sunscreen".
And for the sake of health, everyone has to bask in the sun during pregnancy to supplement calcium and vitamin D, and it is impossible to completely avoid ultraviolet rays.
In addition, even if we can achieve all-round protection against ultraviolet rays, hormones, hormones and other internal factors are unavoidable.
Pregnancy plaque treatment is not fast
For many people, once postpartum hormones return to normal preconception levels, spots improve in 3 to 5 months.
But if it doesn't go away after the time has passed, we can wait until the end of the lactation period before proceeding with treatment.
In addition, we should also be clear: the treatment of pregnancy spots is not fast.
The spots you can see now are basically the results of melanin's efforts to accumulate a few years ago, but during pregnancy, many common factors affected him, causing him to suddenly erupt.
We say that an important reason for the difficulty of treating pregnancy spots is that due to the deep accumulation of spots, while decomposing and destroying pigments for treatment, it may also cause a certain degree of trauma to the skin.
Excessive trauma can be secondary to the inflammatory response of the skin, resulting in a significant increase in melanocyte activity, resulting in aggravation of pregnancy spots or pigmentation, that is, "more and more black".
Once we've made that clear, let's move on to what's next.
#外用涂抹
Although the way to apply it is a little bit of a fuss for freckle removal, it is not completely ineffective.
Both hydroquinone and tretinoin can relieve pregnancy plaque.
Hydroquinone, as the "strongest whitening ingredient on the pre-surface", is familiar to us, which can inhibit the synthesis of melanocytes and accelerate the degradation of melanin.
Figure | "New Progress in the Treatment of Melasma Disease"
However, although hydroquinone can inhibit the production of melanin by epidermal melanocytes, it may also permanently destroy the formation mechanism of melanin, and the appearance of white spots for pigmentation loss is worse if you are not careful.
Moreover, hydroquinone is a banned ingredient in cosmetics in the mainland, and there are only some imported drugs and prescription drugs on a search of a treasure.
Therefore, if you want to use drugs containing hydroquinone components to remove pregnancy spots, you must first consult a doctor.
Tretinoin can accelerate the clearance of melanin by inhibiting the production of tyrosinase and speeding up the renewal of epidermal cells.
However, tretinoin-related drugs should be used after the end of pregnancy and lactation.
Oral tretinoin during pregnancy has a strong teratogenic effect on mammals (including humans).
Although it has not been found that pregnant women will cause deformity after skin medication, but everything is not absolute, the drug may also be transdermal absorption, adults recommend that you do not take this risk.
Do not use such drugs as much as possible during lactation to avoid affecting the physical development of infants and young children.
#内服药物
As we have previously concluded, the main cause of pregnancy spots is melanin deposition, and the main purpose of oral medication is to fight melanin.
For example, in recent years, the commonly used drugs tranexamic acid and glutathione in clinical practice.
But adults have to emphasize that both are prescription drugs, and you must go to the hospital for examination before taking them.
Tranexamic acid is actually what we often call the clearing acid, but also the most critical component of the whitening needle, the whitening needle fast and fierce effect most of the credit should be counted as it. (But whitening needles are not compliant domestically!) ）
Due to the chemical structure similarity to tyrosine, it is possible to interfere with the production pathway of melanin by competing for tyrosine, reducing the production of melanin.
Figure | "Efficacy of Photon Rejuvenation Combined with Tranexamic Acid in the Treatment of Melasma and Its Influencing Factors"
However, tranexamic acid itself is a prescription drug for hemostasis, which has an effect on blood clotting, and taking it privately is likely to interfere with the physiological period and even produce blood clots.
Glutathione, because of its good antioxidant properties, can accelerate the scavenging of free radicals, and can also inhibit the activity of tyrosinase and interfere with the production of melanin.
But again, its job is not here, but a liver function drug, although the safety is higher than tranexamic acid, but also need to consult a doctor after use.
Incidentally, the main raw materials of Japanese whitening pills and whitening needles are also them, so the safety of whitening pills is indeed controversial, and whitening needles are not compliant.
#医美项目
The most commonly used medical aesthetic item for the treatment of gestational spots is lasers.
However, the melasma produced during pregnancy is different from our common sun spots and freckles, and it is more likely to be provoked.
So every doctor who treats melasma in pregnancy will pay attention to a pit: if the treatment energy is too large, it will stimulate melanocyte activity and cause more and more blackening.
Therefore, melasma requires more technical and judgment from doctors, and for the treatment of lasers, it is also necessary to choose carefully.
Clinical treatment is mainly used: Q-switch lasers of different wavelengths: ruby laser (694nm), emerald laser (755nm), Nd:YAG laser (1064nm), densorption and non-decorbation dot matrix laser, strong pulse light, picosecond laser.
It doesn't matter if we are confused, as people who spend money, we don't need to understand such details.
Directly say a conclusion: not bad money, the pursuit of high efficiency can choose picoseconds, the pursuit of cost-effective can choose Q.
What specific instruments are available, you can study the dry goods of the adult before the removal of freckles
Her flashing plain face is so deceitful, why do you have to take the stage with all-inclusive eyeliner?
#联合治疗
These are all good treatments, but "combination therapy" can maximize the effect.
Just as we can take medicine while getting sick, we can also take medicine while taking injections, and for "skin diseases" we can also take a multi-pronged approach.
The latest research is also more inclined to combination therapy, which not only has good results, but also has a fast time. Rapid resolution can also effectively alleviate the psychological anxiety of postpartum spots.
But then again, 70% of people will grow spots during pregnancy, but adults have just said that the vast majority will subside 3 to 5 months after the birth of the child.
Even if it doesn't subside, we don't have to be too anxious, we still have so many ways to deal with it.
Relax your mind~