Obagi Physical UV Broad Spectrum SPF 32 Review

There are two ways to read the Obagi Nu-Derm Physical UV Block, and its reviews split neatly along them. On the brand's own site it has three reviews and a flat one star, all about the texture. At the clinical retailers that stock it, or stocked it before moving it to clearance, the melasma and tretinoin patients who write in praise a number: 18.5 percent zinc oxide, no titanium, no organic filters, no boosters, which gives this cream a deeper long-UVA floor than almost any SPF 50 on the shelf. Both camps are describing the same tube. The zinc load that makes it the right sunscreen for a face being deliberately thinned and depigmented by the Nu-Derm regimen is also what makes it a thick, chalky, stubborn cream that has not been reformulated in two decades.

The label is short and old. Water, a silicone emulsifier, cetyl dimethicone and dimethicone build a water-in-silicone base; isopropyl palmitate and ethylhexyl stearate thin it; butylene glycol and glycereth-26 hydrate a little; hydrogenated castor oil and beeswax structure the cream and help the zinc film cling; salt, a silane coating for the zinc, vitamin E acetate, a fireweed extract, a chelator and methyl- and propylparaben finish it. No fragrance, no alcohol, no organic UV chemistry. It is a formula written when the goal was to get as much zinc as possible onto a treated face and keep it there, and every choice serves that goal, including the ones that a modern formulator would make differently.

The protection case is straightforward and worth spelling out, because the SPF number undersells it. SPF measures UVB, and a zinc-only formula without titanium or organic UVB filters tests modestly on that scale; UVA, which zinc absorbs across its full range and which drives the pigment that hydroquinone patients are trying to lose, scales with the mineral load, and 18.5 percent is a lot. The 2025 review of sunscreen mechanisms and efficacy in the Journal of the American Academy of Dermatology set out that division, covering the properties of active and additive ingredients, the gaps in coverage that SPF alone does not capture, and sunscreen's role in pigmentary disorders and in skin of colour, where UVA and visible light matter more than sunburn. For a melasma face or a Nu-Derm patient at step six, the UVA floor is the number that matters, and this cream's is among the highest in the brand.

On the skin, the reviewers are right. The cream is stiff enough to resist the tube and the fingers, needs warming in the palms, and goes on like stage make-up for several minutes before it settles to a matte, faintly waxy film; fair skin blends it to a glow that several long-term users like, medium and deeper skin never quite clears the cast, and the last quarter of the tube is a fight that runs through twenty years of complaints. It stays put through a warm day thanks to the silicone-and-wax film, which the label's lack of a water-resistance claim undersells, and it does not sting on skin that has just had hydroquinone and tretinoin applied, which is its one unambiguous courtesy. Oily and acne-prone faces find the base heavy and the palmitate and stearate esters are the kind that appear on comedogenic lists, so the cream sits awkwardly in a system that also treats adult acne.

The formula's age shows in more than texture. Methyl- and propylparaben are safe at cosmetic levels and dated as a preservative choice, and propylparaben now falls under restrictions in some US states; the beeswax rules out vegans; and a fireweed extract with vitamin E is the entire skin-care content. Several clinical retailers have moved the product to clearance while Obagi still lists it as Nu-Derm step six, which suggests a quiet wind-down in favour of the brand's more modern Sun Shield Mineral SPF 50, a two-mineral formula that blends better and covers the same post-procedure role.

Fifty-nine dollars for two ounces is the Nu-Derm price and, allowing for the part of the tube nobody can extract, buys about six weeks at the proper dose; the yearly cost is high for what is, in feel, a chalky zinc paste. What the money buys is a genuinely high zinc load with no boosters, a formula that tolerates the most photosensitive skin a dermatologist treats, and the coherence of a regimen that many patients follow to the letter. What it does not buy is a wearable texture, a modern base or a tint, and high-zinc minerals that spread better now exist from clinical and pharmacy brands at every price.

For a patient mid-way through Nu-Derm, or a fair-skinned melasma sufferer who has done the reading and wants the deepest UVA coverage a face sunscreen offers, this remains a defensible, even correct, choice, and the one-star reviews should be read as complaints about feel rather than function. For anyone else, and especially for medium and deeper skin, oily skin and anyone who wants to enjoy putting on sunscreen, Obagi's own Sun Shield Mineral SPF 50 does the job in a formula built this decade.