As understanding of the damaging effects of UV radiation from the sun increases, sun protection is becoming more and more of a concern. As a product development manager, you probably have many questions, and we’re here to answer them all. We’ve put together a complete formulation design guide for private label sunscreen cosmetics that tells you everything you need to know, from ingredient composition structure to evaluation and analysis of sunscreen formulations.
1. WHY WE NEED SUN PROTECTION
2. FORMULA DESIGN OF SUNSCREEN COSMETICS
3. EVALUATION OF THE EFFECT OF SUNSCREEN COSMETICS
4. DEVELOP YOUR BRAND OF SUNSCREEN
WHY WE NEED SUN PROTECTION
Sunlight exposure can increase the oxygen content of body cells, reduce blood sugar and cholesterol levels, and enhance human vitality. men, excessive sun exposure can easily induce and aggravate skin problems such as sunburn, freckles, human skin aging, og kviser. In severe cases, it can also damage the body’s internal organs. The ultraviolet rays in sunlight can be divided into UVA (320~400 nm), UVB (290~320 nm), and UVC (100~290 nm) according to wavelength. Blant dem, ultraviolet UVC and most UVB are absorbed by the ozone layer in the atmosphere, and only the remaining UVA and a small amount of UVB can radiate to the ground. UVB transmittance is weak and can only reach the epidermis of the skin. UVB is the main cause of skin erythema and inflammation, and it can protect it with proper masking. UVA will transmit to the dermis layer of the skin, and the radiation intensity is large, occupying 98% of the ultraviolet energy radiated to the skin surface. It will destroy collagen, elastic fibers, and even fibroblasts, and its damage is relatively slow but cumulative, which is the main cause of skin tanning.
FORMULA DESIGN OF SUNSCREEN COSMETICS
The formulation of sunscreen cosmetics needs to consider the product’s efficacy, sikkerhet, og stabilitet. In order To improve the product’s efficacy, prohibited ingredients or excessive use of local ingredients cannot be used. The following mainly takes milk/cream as an example to introduce the formula structure of sunscreen cosmetics.
2.1 Commonly used sunscreen ingredients
2.1.1 Physical sunscreen ingredients
Physical sunscreens scatter UV rays and reduce their contact with the skin, thereby preventing damage to the skin. The most commonly used physical sunscreens are nanoscale titanium dioxide and ZnO. These sunscreens are chemically inert and safe to use. When added to cosmetics, it helps to stabilize the product and reduces its irritation of the product.
2.1.2 Chemical sunscreen ingredients
Chemical sunscreens can absorb ultraviolet rays and can be divided into UVA absorbers (such as benzophenones and anthranilates) and UVB absorbers (for eksempel parabener, salicylates, and camphor derivatives). The molecules of these UV absorbers absorb UV energy, convert it into heat or release it in a harmless visible light effect, protecting the skin from UV damage. They are the primary sunscreens in modern sunscreen products.
2.1.3 Composition of plant extracts
De siste årene, it has been found that many natural plant extracts also have ultraviolet absorption effects, such as aloe vera, ginger, vitamin A, vitamin c, etc., and all have good sunscreen functions. They are not only non-irritating and non-toxic but also scavenge free radicals and have a good effect on repairing skin after sun exposure.
At present, the combination of a variety of sunscreen ingredients can improve the sunscreen effect of the product. For eksempel, combining UVB and UVA absorber ingredients can simultaneously protect both UVB and UVA. Combining physical and chemical sunscreen ingredients can reduce the number of chemical sunscreen ingredients and UVB absorption. The combination of the ingredients has a synergistic effect and can improve sunscreen performance.
2.3 Bløtgjørende midler
Emollients can affect the dispersion of sunscreen products and the ability of sunscreens to penetrate the skin. Choosing an emollient with good spreading and penetrating properties as the carrier of the sunscreen not only helps to spread the sunscreen evenly on the skin but also increases the SPF value of the product. I tillegg, we should note that some emollients compatible with sunscreens will react with sunscreens under light irradiation, promote their degradation, and cause shifts in absorption peaks, thereby affecting the ability of sunscreens to absorb ultraviolet rays. Such as anthranilate, octyl p-methoxysalicylate, etc.
2.4 Other ingredients
In order to improve the performance of the product, we can also add some other ingredients to the formula. For eksempel, adding antioxidants can help stabilize the sunscreen product. The addition of anti-sensitizers can reduce product irritation to the skin. Adding a skin feel modifier imparts a good skin feel to the product. The addition of chelating agents can complex the metal ions that discolor the product and can also increase the stability of the formulation. Film formers allow sunscreen products to deposit evenly on the skin surface to form a thick, water-resistant layer for high SPF values. Anti-inflammatory agents prevent skin irritation from UV exposure and sunscreens themselves. Endelig, when choosing preservatives and flavors, we should consider whether they have photosensitivity and irritation.
EVALUATION OF THE EFFECT OF SUNSCREEN COSMETICS
The sun protection effect of sunscreen cosmetics is evaluated by the Sun protection factor and the Protection of UVA.
3.1 SPF value
SPF is the energy required to produce minimal erythema on sunscreen-protected skin to the power needed to make the same degree of erythema on unprotected skin. The SPF value objectively reflects the ability of sunscreen products to protect against UVB rays.
Som regel, using a high-strength sunscreen with an SPF of 15 is already good enough to protect your skin from UV rays. men, with the deterioration of the environment, the destruction of the ozone layer, and the increasing ultraviolet radiation, Solkremprodukter’ performance is relatively improved. Products with an SPF value of less than 10 are impossible to find on the market. The common ones are SPF values of 30 eller mer, and some even have an SPF value of 80.
3.2 PA value
SPF is against UVB rays, it can only protect 1% of the total UV rays on the ground, but it can’t do anything to the natural sun killer UVA. Derfor, UVA sunscreens will play a more effective role. The PA value is the sun protection factor for UVA established by the Japan Cosmetics Association. It refers to the ratio of the minimum sustained darkening required to cause darkening of the skin protected by the sunscreen product to the minimum needed sustained darkening to produce darkening of the unprotected skin. The intensity of PA is indicated by three powers “+, ++, +++.” The more “+,” the better the effect of preventing UVA and the longer the adequate protection time.
3.3 Stability test
We carried out -10, 40 ℃ cold resistance, and heat resistance stability test for one month on the sunscreen cosmetics produced by the formula. Observe that the sunscreen lotion does not appear to demulsify, delamination, thin, or discoloration. Observe that the sunscreen is not thick, thin, complex, or discolored.
DEVELOP YOUR BRAND OF SUNSCREEN
With the development of society, forbrukere’ demand for cosmetics is increasing, and the requirements are getting higher and higher. Especially sunscreen products are developing rapidly. The application of natural extracts will inevitably reduce the dependence of sunscreen cosmetics on chemical UV absorber ingredients, and sunscreen cosmetics will be safer—sunscreen products combined with moisturizing, nutrition, and anti-aging to obtain multiple functions. And with the increasing destruction of the ozone layer and the growing harm of ultraviolet rays, other types of products will inevitably have sunscreen functions, so start contacting us now.
Produktsjef
Alice Zhang |
