La Roche-Posay Hyalu B5 Pure Hyaluronic Acid Serum

La Roche-Posay Hyalu B5 Serum is a hydrating, anti-aging face serum with hyaluronic acid and vitamin B5 that plumps, repairs, and soothes sensitive skin.

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Rankings by Sentiment Analysis

Reddit Rank

#10

Total Upvotes

114

Editorial Summary: Great for hydration and sensitive skin, but pricey and has alcohol which some hate. Absorbs slow and can feel oily for some. Overall solid but not perfect, worth trying if you want a quality hyaluronic acid serum.

Pros

✓Highly moisturizing and hydrating
✓Suitable for sensitive skin, gentle
✓Helps plump and repair skin
✓Reduces fine lines effectively
✓Well-liked by users familiar with skincare

Cons

✗Contains alcohol, may irritate some
✗Can increase oiliness on oily skin
✗Relatively expensive compared to alternatives
✗Has a fragrance some dislike
✗Absorbs slowly for some users

Methodology: Analyzed 38 quotes from Reddit spanning skincare-focused subreddits including SkincareAddiction, 30PlusSkinCare, KoreanBeauty, and others from April 2015 to June 2025, synthesizing common themes from user experiences and opinions.

Asked by Redditors

How should I apply La Roche-Posay Hyalu B5 Serum?

Apply it on damp skin right after cleansing or toning, then follow with moisturizer to lock in hydration.

Is this serum suitable for sensitive skin?

Yes, many users with sensitive skin report it is gentle and non-irritating.

Does it work well with retinol products?

Yes, it helps combat dryness caused by retinol and can be layered before moisturizers.

Are there cheaper alternatives?

Yes, The Ordinary and other brands offer similar hyaluronic acid serums at lower prices.

Why do some users dislike this serum?

Some dislike the alcohol content, fragrance, or that it can make oily skin feel greasier.

Reddit Reviews:

Calculated by the the number of posts or comments that have an opinion on this product

Positive

Neutral

Negative

Neutrogena Hydro Boost Hyaluronic Acid Serum (the bottle is almost done and I have La Roche Posay Hyalu B5 Serum waiting in the wings)

u/[deleted]Sentiment: likely neutral Upvotes: 20

Well, I got distracted and tired and ended up falling asleep after that and never did any other serums/moisturizers/occlusives/etc. before bed. Then I woke up this morning ABSOLUTELY GLOWING and hydrated. Honestly, the best my skin has ever looked in the AM.

u/[original poster]Sentiment: likely positive Upvotes: 14

La Roche Posay is a great moderately priced alternative.

u/WandererOfInterwebsSentiment: likely positive Upvotes: 9

La Roche-Posay Hyalu B5 Hyaluronic Acid Face Serum - I LOVE this one—super moisturizing and better than TO’s hyaluronic acid in my opinion

u/unknownSentiment: likely positive Upvotes: 7

I have 3 serums in my arsenal right now, a vitamin C serum which I apply in the morning, and La Roche-Posay's Hyalu B5 and Retinol B3. I bought the retinol serum recently. Up until then, I would apply the hyaluronic acid serum in the evening.

u/[deleted]Sentiment: likely neutral Upvotes: 7

The Hyalu B5 is about 30% more expensive, but both have Hyaluronic acid etc.

u/[OP]Sentiment: likely neutral Upvotes: 6

La Roche-Posay Hyalu B5 Pure Hyaluronic Acid Serum

u/OPSentiment: likely neutral Upvotes: 5

I recently purchased the la roche-posay Hyalu B5 serum, should I put it on right after washing my face while it's still damp or after putting on toner before the toner dries.

u/[deleted]Sentiment: likely neutral Upvotes: 4

Moisturizer: La Roche-Posay Hyalu B5 Pure Hyaluronic Acid Serum, Vanicream Moisturizing Cream Hydration & Moisturizer: La Roche-Posay Hyalu B5 Pure Hyaluronic Acid Serum Vanicream Moisturizing Cream

u/skinbyjohnSentiment: likely neutral Upvotes: 4

This korean beauty youtuber liahyoo recently posted about the LRP serum and she loved it. Maybe check out that video?!

u/travelmore18Sentiment: likely positive Upvotes: 3

Currently Showing 10 Reviews