Sunscreen SPF/PA with 5% OMC and 5% DHHB
Question
I would like to inquire about the expected SPF and PA values for a sunscreen cream formulation that includes [url=http://www.myskinrecipes.com/shop/spf-sunscreen/523-octyl-methoxycinnamate-om-cinnamate.html:2883kbhl]OMC[/url:2883kbhl] 5% and [url=http://www.myskinrecipes.com/shop/spf-sunscreen/528-dhhb-diethylamino-hydroxybenzoyl-hexyl-benzoate.html:2883kbhl]DHHB[/url:2883kbhl] 5%. What would the SPF and PA values be?
Answer
Sunscreen Protection with OMC and DHHB
Based on your formulation using 5% OMC and 5% DHHB, here is an estimation of the protection level:
- UVA Protection (PA): DHHB is a highly effective UVA filter. At a concentration of 5%, DHHB typically provides a PA+++ level of protection.
- UVB Protection (SPF): OMC is a primary UVB filter. At 5%, it contributes to the SPF value. Additionally, DHHB, while primarily a UVA filter, acts as an SPF booster when combined with UVB filters like OMC. This means the presence of 5% DHHB will help increase the SPF provided by the 5% OMC.
Overall: This combination provides good broad-spectrum protection, with PA+++ for UVA and a boosted SPF for UVB. However, the exact SPF value of the final formulation cannot be precisely determined without laboratory testing or using a dedicated sunscreen formulation simulator tool. Factors like the complete formula composition and manufacturing process also influence the final SPF and PA values.
