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Most Recent Questions
Recent Question:
Does this work really well under makeup or will it make my makeup break apart like other face sunscreens?
Recent Question:
Would this be considered sunscreen with moisturizer, or would I need a separate moisturizer as well?
Questions with Most Recent Answers


Algenist Ultra Lightweight UV Defense Fluid SPF 50

What it is:An ultra-sheer, weightless fluid for everyday protection against broad-spectrum UVA/UVB damage. What it does:This fast-absorbing, ultra-lightweight fluid provides daily protection against broad-spectrum UVA/UVB damage. Alguronic Acid combines with antioxidant-rich botanicals and UVA/UVB protecting actives to delay signs of aging caused by sun and environmental stressors. This oil-free, sheer formula has a silky texture and weightless feel, designed to apply smoothly on top of other skincare products and under makeup for a soft, matte finish. What it is formulated WITHOUT:- Parabens- Sulfates - Synthetic Dyes- Phthalates- GMOs- Triclosan What else you need to know:Alguronic Acid is a unique and powerful regenerative compound from microalgae. This rare ingredient was discovered unexpectedly by a biotechnology laboratory in San Francisco, CA, focused on researching renewable energy solutions. Algenist is the only line of skincare products to contain the antiaging power of Alguronic Acid. Research results:In comparison testing, Alguronic Acid outperformed other well-known active antiaging ingredients, demonstrating superior antiaging benefits: -54% decrease in UV cell damage -55% increase in cellular regeneration -32% increase in elastin synthesis -26% decrease in melanin production *Average results measures following an in-vitro test with Alguronic Acid.
Questions & Answers:
15 Questions
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37 Answers
Overall Rating:
4.476 out of 5
4.5
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Product Details

Questions & Answers for Algenist Ultra Lightweight UV Defense Fluid SPF 50

Question
does it leave a white cast?
asked 2 years, 9 months ago
padthai
on Ultra Lightweight UV Defense Fluid SPF 50
4 answers
Answers
answer 1
A little bit, but if you wear powder or bronzer over it you can cover it up.
answered 5 months, 2 weeks ago
sd4me
(San Diego, CA)
answer 2
No. The liquid is white, but it blends in clear on your face. No white haze.
answered 1 year, 9 months ago
carebears
(Bakersfield, CA)
answer 3
Nope, it didn't leave any whiteness at all.
answered 1 year, 11 months ago
cnickyc
(Morehead City, NC)
answer 4
No, it blends in perfectly!
answered 2 years, 7 months ago
Anonymous
(Miami, FL)
Question
if someone could compare the Algenist with the Day Screen High Protection SPF 40 of Clarins.
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asked 2 years, 1 month ago
Anonymous
on Ultra Lightweight UV Defense Fluid SPF 50
4 answers
Answers
answer 1
I have to disagree with another respondent, who says the Clarins "UV Plus HP Broad Spectrum SPF 40 Sunscreen Multi-Protection" is a sunblock and isn't broad spectrum - it is both sunscreen and broad spectrum, it's right there in the name. I regularly use both the Clarins and Algenist, and they are quite comparable. The Algenist is slightly lighter when going on but they both dry down nicely. The Algenist bottle is smaller, which may lead you to apply less than you should be applying if you aren't careful, and that measurement thingy on the side is pointless since the bottle is opaque (you wouldn't want a clear bottle for something which can be degraded by exposure to light anyway!). All in all, you can't go wrong with either one. Clarins is a better price, especially if you can nab one of those boxes in store that has two untinted bottles for $60, but if you are really going for the most lightweight and high SPF protection possible, don't mind having to buy a new bottle more frequently, and won't skimp on the product application because of the fact it comes in such a small bottle, Algenist is your answer.
answered 3 months ago
LadyHuggington
(San Francisco, CA)
answer 2
I use Clarins and I have very pale skin. It works great for me and doesn't give give me hives (which chemical sunscreen does).
answered 1 year, 8 months ago
Feryn
(Berkeley, CA)
answer 3
I haven't tried the Clarins but I love this it goes on smooth and I like the SPF factor
answered 1 year, 8 months ago
msjani
(santa clarita ca)
answer 4
The difference is that Clarins sunblock is not broad spectrum: the only active sunblocking ingredient there is titanium dioixide which does not protect against all uva rays, that as we know, are responsible for aging.
answered 2 years ago
Romannatasha
(Palo Alto, CA)
Question
Clear?
Hi, is this a clear liquid?
asked 2 years ago
suxx2bu
(Westmont, IL)
on Ultra Lightweight UV Defense Fluid SPF 50
4 answers
Answers
answer 1
No, it's a creamy white moisturizer.
answered 5 months, 2 weeks ago
sd4me
(San Diego, CA)
answer 2
The liquid is white, but blends in clear on your face. No white haze at all.
answered 1 year, 9 months ago
carebears
answer 3
It is a white light weight cream, but does not leave a white film on your face like many other sun blocks do.
answered 1 year, 11 months ago
cabaretdiva
(Vienna, VA)
answer 4
Nope, it's a white colored fluid.
answered 1 year, 11 months ago
cnickyc
(Morehead City, NC)
Question
Can this be applied to eye contour area?
I used the Clarin SPF40 and it can be applied to the eye contour area. I tried this product and love that it goes on clear and leaves a light matt finish but was wondering if this can also be applied to the eye contour area?
asked 1 year, 5 months ago
Anonymous
(Palo Alto, CA)
on Ultra Lightweight UV Defense Fluid SPF 50
4 answers
Answers
answer 1
I use it occasionally on the eyes, on top of the eye cream and underneath eye primer and make-up. Works perfectly, not greasy and no creases.
answered 3 months, 3 weeks ago
EvaV
answer 2
I use it under my eyes! I have very sensitive skin and typically react if something is near my eyes. This product hasn't caused any problems for me.
answered 1 year ago
JumpyJenny
(Porland, OR)
answer 3
i havent used it for the eye area...you should be wearing sunglasses in the sun or you will get cataracts
answered 1 year, 5 months ago
msjani
(santa clarita ca)
answer 4
Yes, I wear it all the time around the eye area without irritation or stinging.
answered 1 year, 5 months ago
sugardoll
(San Diego, CA)
Question
is this also a moisturizer?
asked 1 year ago
cymbals
(cedarhurst, NY)
on Ultra Lightweight UV Defense Fluid SPF 50
4 answers
Answers
answer 1
No, you put it on top of your moisturizer. At least, that is what the consultants at Sephora told me! They said, "SPF is always last". BTW, I've been using this about a month and love it. It is sheer and goes right in. Lovely.
answered 1 month, 1 week ago
Kittyinva
(Warrenton, VA)
answer 2
Yes, it's a moisturizer with SPF 50, which is way better daily protection than the SPF 15 found in most moisturizers.
answered 5 months, 2 weeks ago
sd4me
(San Diego, CA)
answer 3
I don't think so. I would use a moisturizer first, then apply this.
answered 1 year ago
Aag77
(Herhsey, PA)
answer 4
No, this is just a sunscreen.
answered 1 year ago
1877SEPHORA
(San Francisco, CA)
Question
Is this a moisturizer?
As not all sunblocks are, is this a moisturizer? Or is it meant to go over a moisturizer? Can it just be worn over the serum? I'm 59 and havean oily t-zone.
asked 2 years, 7 months ago
donnamariet
(LaCrescenta, CA)
on Ultra Lightweight UV Defense Fluid SPF 50
3 answers
Answers
answer 1
Yes, it's a moisturizer and it made my oily T-Zone go away. It has a matte finish.
answered 5 months, 2 weeks ago
sd4me
(San Diego, CA)
answer 2
I use it over a moisturizer. But it really depends on your skin. I have an oily t-zone as well and don't find that it makes me more or less oily. You might try with and without a moisturizer and see.
answered 1 year, 11 months ago
cabaretdiva
(Vienna, VA)
answer 3
for my combo skin, it is not moisturizing. if i'm feeling dry, i use a moisturizer before i apply it. i've also used a serum under it as well without issue.
answered 2 years, 6 months ago
padthai
(nyc)
Question
How do you remove this sunscreen?
The Algenist Ultra Lightweight UV Defense Fluid stays on SO well that it won't come off at the end of the day without some kind of very very heavy duty exfoliating product. Not even a Clarisonic will get rid of it! Is there something else that will dissolve and remove this sunscreen at the end of the day? It's my favorite!
asked 1 year, 11 months ago
Anonymous
(San Francisco, CA)
on Ultra Lightweight UV Defense Fluid SPF 50
3 answers
Answers
answer 1
I've been using this product for a year. I've noticed that it's difficult to wash off my hands when I wash them immediately after application. However, by the end of the day, I haven't had any issues washing it off my face. Have you tried a mineral oil based makeup remover?
answered 1 year ago
JumpyJenny
(Porland, OR)
answer 2
wow mine comes off easily I use a gentle cleanser and a toner
answered 1 year, 8 months ago
msjani
(santa clarita ca)
answer 3
I would recommend using a makeup removal wipe or cleanser before just using face wash.
answered 1 year, 11 months ago
1877SEPHORA
(San Francisco, CA)
Question
PA level?
SPF 50 and what is the PA level ?
asked 2 years, 7 months ago
Anonymous
(Amherst, MA)
on Ultra Lightweight UV Defense Fluid SPF 50
2 answers
Answers
answer 1
The active ingredients are Octinoxate, 7.5% Titanium Dioxide, 2.0% Zinc Oxide, 17.1%, in my experience it should has at least PA++ strength.
answered 10 months ago
vivivian
(Winston-Salem NC)
answer 2
PA is our Asian thing... I think it's some Japanese rating, PA is just some '+', the more '+' it has the more sun-protective it is. I don't think PA rating has a big difference with the SPFs, only that SPF is easier to calculate (like SPF rating * 10 minutes or so)
answered 1 year, 2 months ago
Queenieeeeeeee
(Ontario)
Question
Active Ingredient %'s?
What are the percentages of the active sunscreen ingredients?
asked 1 year, 11 months ago
jbunny87
(San Diego,CA)
on Ultra Lightweight UV Defense Fluid SPF 50
2 answers
Answers
answer 1
This information is available on the Sephora website
answered 11 months ago
hilevine
(Bay Area, California)
answer 2
Octinoxate, 7.5%, Zinc oxide, 17.1% and Titanium dioxide, 2%
Mercifully, no avobenzone which I am highly allergic to.
answered 1 year, 7 months ago
sexysenior
(Lowell, MA.)
Question
Water proof
Is this sunscreen water proof? Thanks!
asked 1 year ago
Leo79
on Ultra Lightweight UV Defense Fluid SPF 50
2 answers
Answers
answer 1
No, but the SPF factor of 50 means everything to me. I have very fair sensitive skin and I wear this every day-now on my second bottle of this. I brought it to New Orleans last summer and never got burned-Florida in November and just got back from Puerto Rico-no burn-even walking on the beach when I forgot my sunhat.
answered 1 year ago
sexysenior
(Lowell, MA.)
answer 2
Hi Leo79,

This suncreen is not waterproof.
answered 1 year ago
1877SEPHORA
(San Francisco, CA)
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