Discover our top recommendations for fine lines + wrinkles.

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Crème solaire pour femmes enceintes.

Which sunscreen is suitable for a pregnant woman?

When one is pregnant, it is important to protect the skin from the sun's rays, even more so than usual. Indeed, the skin becomes more sensitive to UV rays and more prone to hyperpigmentation and the appearance of brown spots. That's why it's important to apply sunscreen daily throughout pregnancy. But which one to choose?

The importance of protecting your skin from the sun while pregnant.

During pregnancy, significant hormonal fluctuations occur. Among these, there is a marked increase in the levels of estrogen and progesterone, which are steroidal hormones. These hormones stimulate the process of melanogenesis, that is, the synthesis of melanin, the pigment responsible for skin coloration. Therefore, when exposed without sun protection, pregnant women are more prone to hyperpigmentation, resulting in the appearance of the "pregnancy mask". These brown spots typically appear from the fourth month of pregnancy and predominantly affect individuals with darker skin, phototypes III to VI in the FITZPATRICK classification. Indeed, darker skin contains more melanin than lighter skin, and specifically more eumelanin, a darker form, which provides better protection against UV rays.

Furthermore, it is not uncommon for pregnant women to experience tightness and feelings of dryness on their skin, due to the hormonal and structural changes their bodies undergo during pregnancy. As a result of weight gain, the cells of the stratum corneum are stretched and their barrier function is weakened. Ceramides, which serve as intercellular junctions, then allow more water to escape, increasing the risk of skin dehydration. This can be exacerbated by exposure to the sun, whose UV rays are drying to the skin as they weaken the hydrolipidic film present on its surface.

Finally, the blood circulation intensifies in a woman's body from the fourth week of pregnancy, a period corresponding to the beginning of blood exchanges between the mother and the embryo. This then causes an increase in body temperature. This increase is heightened when exposed to the sun, where solar UV rays heat the epidermis and have a vasodilatory action.

Sunscreen Protection Factor: Which One to Choose?

It is important toapply a broad-spectrum sunscreen daily to exposed areas during pregnancy, regardless of one's skin type. For optimal protection and a minimal risk of developing "melasma", it is recommended to choose a sunscreen with a SPF of 50 or higher. The SPF is calculated based on the protection the product provides against UVB rays. For the product to also protect against UVA rays, the term "broad-spectrum protection" must be indicated. As a reminder, an SPF 30 product allows approximately 3% (≈ 1/30th) of UVB rays to pass through, while an SPF 50 product only allows 2% (= 1/50th) to pass through. The difference may seem minimal, but it is actually significant.

At Typology, we offer a complete range of sun care products (SPF 30 and SPF 50), suitable for pregnant women, providing protection and hydration to the skin, thanks to their richness in aloe vera (INCI: Aloe Barbadensis Leaf Juice Powder), in hyaluronic acid (INCI: Hydrolyzed Hyaluronic Acid) and in karanja oil (INCI: Pongamia Glabra Seed Oil) for facial sun creams. These treatments are hypoallergenic and do not contain any allergenic ingredients.

Which sunscreen to choose: mineral or organic?

Sunscreen filters are the foundation of sunscreen creams' functionality. Incorporated into a sunscreen, they protect the skin from UVA and UVB rays. There are two types of sunscreen filters : organic filters and mineral filters. The organic filters often get a bad rap, as some are suspected to be endocrine disruptors. This is particularly the case for octocrylene, octinoxate, and oxybenzone. Some preservatives like BHT are also criticized.

Regarding oxybenzone, in vitrostudies and theoretical data suggest that it could cause a congenital malformation (Hirschsprung's disease) or lead to uterine enlargement, but this has not been proven in vivo. This molecule has also been found in breast milk, although it does not have negative effects on babies. However, as a precaution, it is better to avoid sunscreens that contain it.

The same is true for BHT, a study on mice has shown that it causes decidualization of the endometrium at the beginning of pregnancy, meaning it disrupts the process by which endometrial cells undergo changes to accommodate the embryo. This increases the risk of miscarriage.

This is why it is generally recommended for pregnant women to opt for mineral-based sunscreens. In terms of effectiveness, both types of sunscreens are equivalent. However, it's worth noting that it's not necessary to completely avoid all sunscreens that contain organic filters during pregnancy. Indeed, not all are suspected to be endocrine disruptors and most are risk-free.

Are sunscreens for children a solution?

To protect your skin during pregnancy, opting for sunscreens formulated for children may seem like a good choice at first glance. This type of care is often considered gentler and suitable for sensitive skin. In reality, the "for children" labels are not monitored for sunscreens and some contain allergenic ingredients or are not suitable for sensitive skin. Therefore, it is better to pay attention to the INCI list, which details the molecules that can be found in the product. We also recommend being cautious if you choose a sunscreen in spray form. When spraying on the face, it is important to not inhale or ingest the product.

Important : Although the application of sunscreen provides the skin with protection against UV rays, it is preferable to limit exposure time, especially between 12pm and 4pm. Indeed, it is during this period of the day that the rays are most intense. Additionally, it is recommended to favor covering clothing and to wear a hat and sunglasses.

Sources

  • TYLER K. H. Physiological skin changes during pregnancy. Journal of Clinical Gynecology and Obstetrics (2015).

  • CAMELI N. & al. Melasma: How hormones can modulate skin pigmentation. Journal of Cosmetic Dermatology (2019).

  • DOWNS C. & al. Can oxybenzone cause Hirschsprung's disease? Reproductive Toxicology (2019).

  • SIRITHANABADEEKUL P. & al. Ultraviolet filters in sunscreen products labeled for use in children and for sensitive skin. Pediatric Dermatology (2020).

  • HE J. Exposure to butylated hydroxytoluene compromises endometrial decidualization during early pregnancy. Environmental Science and Pollution Research International (2021).

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