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In the EU, sunscreen labels can only go up to SPF 50+ (initially listed as 30 but soon revised to 50). [73] Australia's Therapeutic Goods Administration increased the upper limit to 50+ in 2012. [74] [75] In its 2007 and 2011 draft rules, the US Food and Drug Administration (FDA) proposed a maximum SPF label of 50, to limit unrealistic claims.
UPF (ultraviolet protection factor) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to SPF (sun protection factor) ratings for sunscreen. While standard summer fabrics have UPF ~6, sun protective clothing typically has UPF ~30, which means that only 1 out of ~30 units of UV will pass through (~3%).
Appropriate sun-protective clothing, use of broad-spectrum (UVA/UVB) sunscreen with at least SPF 50, and avoidance of intense sun exposure may prevent skin cancer. [51] A 2016 review of sunscreen for preventing cutaneous squamous-cell carcinoma found insufficient evidence to demonstrate whether it was effective.
Softwood plywood is usually made either of cedar, Douglas fir or spruce, pine, and fir (collectively known as spruce-pine-fir or SPF) or redwood and is typically used for construction and industrial purposes. [12] The most common dimension is 1.2 by 2.4 metres (3 ft 11 in × 7 ft 10 in) or the slightly larger imperial dimension of 4 feet × 8 feet.
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To protect the skin from harmful UV radiation, such as photodermatosis, acne aestivalis, actinic keratosis or urticaria solaris, normal clothing, special UV protective clothing (SPF 40-50) and high SPF sunscreen can be used. The Australian-New Zealand Standard (AS/NZS 4399) of 1996 measures new textile materials in an unstretched and dry state ...
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Jesus The Christ Pantocrator of Saint Catherine's Monastery at Mount Sinai, 6th century AD Born c. 6 to 4 BC [a] Herodian kingdom, Roman Empire Died AD 30 or 33 (aged 33 or 38) Jerusalem, Judaea, Roman Empire Cause of death Crucifixion [b] Known for Central figure of Christianity Major prophet in Islam and in Druze Faith Manifestation of God in BaháΚΌí Faith Parent(s) Mary, Joseph [c] Jesus ...