HYDRATE
MOISTURIZE
CONDITION
BLOCK

Vars plant oils offer varying degrees of natural sun protection, with some being more effective than others. Red raspberry seed oil is known for having a high SPF, ranging from 28 to 50, while wheat germ oil also offers significant protection with an SPF around 20. Avocado oil and olive oil have lower SPFs, around 15 and 8 respectively. Coconut oil typically has an SPF of 4-6.
Here's a more detailed look:
Red Raspberry Seed Oil: Considered one of the best natural oils for sun protection, with an SPF between 28 and 50. It also offers antioxidant and phytosterol benefits.
Wheat Germ Oil: Provides a good level of sun protection with an SPF around 20.
Avocado Oil: Offers some sun protection with an SPF around 15.
Olive Oil: Has a natural SPF of around 8, providing some protection against UV rays.
Coconut Oil: Offers a lower SPF of around 4-6, but still provides some moisturizing and nourishing benefits.
Other oils: Canola oil has an SPF of approximately 16.51. Jojoba oil has an SPF of 4. Macadamia oil has an SPF of about 6. Almond oil has a low SPF, around 5. Carrot seed oil has a higher SPF, estimated at 38-40.

protection INDEXES
Vegetable oils have a protection index ranging between 0 and around 35.

PLEASE NOTE :
SPF STOPS UV
2 50% to get through that can result in redness and burns
15 93% that can result in redness and burns
20 95% that can result in redness and burns
30 97% therefore, it allows 3% to get through
50 98% therefore, it allows 2% to get through
Some Vegetable Oils and their sun protection index
carrier oil

Raspberry oil (pips): SPF between 28 et 50
Wheat germ oil: SPF around 20
Avocado oil: SPF around 15
Soy oil: SPF 10*
Olive oil: SPF around 8
Coconut oil: SPF around 8
Hempseed oil: SPF around 7
Macadamia oil: SPF around 6
Shea butter: SPF around 6
Castor oil: SPF around 6
Sweet almond oil: SPF around 5
Jojoba oil: SPF around 5
Sesame oil: SPF around 2
Argan oil: SPF =0

A study conducted in 2001 from Cosmetic Dermatology showed that when mixing pomegranate seed oil into a traditional sunscreen, it boosts the effectiveness of UV protection by 20 percent.

Reference:
Kaur CD, Saraf S. In vitro sun protection factor determination of herbal oils used in cosmetics. Pharmacognosy Res. 2010 Jan;2(1):22-5.

Missouri State University News and Events: http://news.mst.edu/2012/05/sunscreen_ingredient_may_pose/

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3140123/

http://happyzine.co.nz/2012/01/18/the-good-news-about-natures-spf-protec...

Coola’s Sun Science Lesson: http://www.coolasuncare.com/sun-science/uva-vs-uvb

Dechen, Shanti, Clinical Aromatherapy Level 1: Lesson 8: Carrier Oils, Crestone, CO, 2021.

1.Ferrero L, Pissavini S, Marguerite, Zastrow L. Sunscreen in vitro spectroscopy: Application to UV A protection assessment and correlation with invivo persistent pigment darkening. Int J Cos Sci. 2002;24:63–70. doi: 10.1046/j.1467-2494.2002.00130.x. [DOI] [PubMed] [Google Scholar]
2.Afaq F, Mukhtar H. Botanical antioxidants in the prevention of photocarcinogenesis and photoaging. Exp Dermatol. 2006;15:678–84. doi: 10.1111/j.1600-0625.2006.00466.x. [DOI] [PubMed] [Google Scholar]
3.Wolf R, Wolf D, Morganti P, Ruocco V. Sunscreens. Clin Dermatol. 2001;9:452–9. doi: 10.1016/s0738-081x(01)00190-0. [DOI] [PubMed] [Google Scholar]
4.Aburjai T, Natsheh FM. Plants used in cosmetics. Phytotherapy Res. 2003;17:987–1000. doi: 10.1002/ptr.1363. [DOI] [PubMed] [Google Scholar]
5.Bendová H, Akrman J, Krejcí A, Kubác L, Jírová D, Kejlová K, et al. in vitro approaches to evaluation of Sun Protection Factor. Toxicol in vitro. 2007;21:1268–75. doi: 10.1016/j.tiv.2007.08.022. [DOI] [PubMed] [Google Scholar]
6.Wood C, Murphy E. Sunscreens Efficacy. Glob Cosmet Ind Duluth. 2000;167:38–44. [Google Scholar]
7.Fourneron JD, Faraud F, Fauneron A. Sur la mesure in vitro de la protection solaire de crèmes cosmétiques. C R Acad Sci II. 1999;2:421–7. [Google Scholar]
8.Gordon VC. Evaluation du facteur de protection solaire. Parfum Cosmet Arom. 1993;112:62–5. [Google Scholar]
9.Mansur JS, Breder MNR, Mansur MCA, Azulay RD. Determinação Do Fator De Proteção Solar Por Espectrofotometria. An Bras Dermatol Rio De Janeiro. 1986;61:121–4. [Google Scholar]
10.Pissavini M, Ferrero L, Alaro V, Heinrich U, Tronnier H, Kockott D, et al. Determination of the in vitro SPF. Cosmet Toiletries Oak Park. 2003;118:63–72. [Google Scholar]
11.Walters C, Keeney A, Wigal CT, Johnstom CR, Cornelius RD. The spectrophotometric analysis and modeling of sunscreens. J Chem Educ. 1997;74:99–102. [Google Scholar]
12.Allen MW. Measuring the sun protection factor of sunscreens. Thermo Scientific. 2007 [Google Scholar]
13.Santos EP, Freitas ZM, Souza KR, Garcia S, Vergnanini A. in vitro and in vivo determinations of sun protection factors of sunscreen lotions with octylmethoxycinnamate. Int J Cosmet Sci. 1999;21:1–5. doi: 10.1046/j.1467-2494.1999.181658.x. [DOI] [PubMed] [Google Scholar]
14.Ashawat MS, Saraf S, Saraf S. Photo protective properties of Boerhavia diffusa, Biosciences. Biotech Res. 2006;3:257–60. [Google Scholar]
15.Sayre RM, Agin PP, LeVee GJ, Marlowe E. Comparison of in vivo and in vitro testing of sunscreening formulas. Photochem Photobiol. 1979;29:559–66. doi: 10.1111/j.1751-1097.1979.tb07090.x. [DOI] [PubMed] [Google Scholar]
16.Riegelman S, Penna RP. Effect of vehicle components on the absorption characteristics of sunscreens compounds. J Soc Cosmet Chem. 1960;11:280–91. [Google Scholar]
17.Agrapidis-Paloympis LE, Nash RB, Shaath NA. The effect of solvents on the ultraviolet absorbance of sunscreens. J Soc Cosmet Chem. 1987;38:209–21. [Google Scholar]
18.Dutra EA, Oliveira DA, Kedor-Hackmann ER, Santoro MI. Determination of sun protection factor (SPF) of sunscreens by ultraviolet spectrophotometry. Braz J Pharma Sci. 2004;40:381–5. [Google Scholar]