{"ok":true,"data":{"product":{"brand":"Kérastase","name":"Nutritive 8H Magic Night Hair Serum","slug":"kerastase-nutritive-8h-magic-night-hair-serum","product_url":"/products/kerastase-nutritive-8h-magic-night-hair-serum","brand_url":"/brands/kerastase","subcategory":"hair treatment","formulation":"serum","finish":null,"price_tier":"luxury","enriched_price":"$62.00","enriched_price_usd":62,"retailers":["Amazon","Sephora","Stylevana"],"key_ingredients":["Plant-Based Proteins","Niacinamide","Glycerin"],"claims":["8-hour overnight treatment","for dry hair","hydrating"],"consensus_summary":"Kérastase Nutritive 8H Magic Night Hair Serum has a gel-cream texture that feels nourishing and visibly smooths hair, with one creator noting a friend commented on the improvement. The formula is effective enough to prompt outside compliments, but the same creator flags that it is \"really expensive.\" This serum delivers results for those willing to pay a premium, though budget-conscious shoppers may want to consider alternatives.","consensus_tagline":null,"gtin":null,"shades":[]},"signal":{"total_mentions":2,"holy_grail_count":0,"loves_it_count":1,"worth_trying_count":1,"mentions_count":0,"mixed_count":0,"not_recommended_count":0,"unsponsored_count":2,"sponsored_count":0},"caveats":{"mixed_evidence":false,"single_creator":false,"no_price_data":false,"has_negative":false},"tags":{"claims":[],"attributes":[{"tag":"nourishing","label":"Nourishing","group":"attribute","polarity":"positive","mention_count":2,"product_count":1,"source_type":"creator_quote","sample_quote":"It feels like a gel cream. So, it feels very nourishing to the hair.","provenance":[{"creator_handle":"daceycash","creator_name":"Dacey Cash","channel_url":"https://www.youtube.com/@daceycash","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo","video_title":"Sephora Sale 2026 Holy Grails: My Favorite Products","video_date":"2026-04-10"},{"creator_handle":"j.uuuuudy","creator_name":"JUDY","channel_url":"https://www.youtube.com/@j.uuuuudy","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc","video_title":"Every product I finished in 2025","video_date":"2025-12-19"}]}],"good_for":[{"tag":"frizz","label":"Frizz","group":"concern","polarity":"positive","mention_count":2,"product_count":1,"source_type":"deepseek","sample_quote":"my friend was like, 'Oh, your hair looks so much smoother recently.'","provenance":[{"creator_handle":"daceycash","creator_name":"Dacey Cash","channel_url":"https://www.youtube.com/@daceycash","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo","video_title":"Sephora Sale 2026 Holy Grails: My Favorite Products","video_date":"2026-04-10"},{"creator_handle":"j.uuuuudy","creator_name":"JUDY","channel_url":"https://www.youtube.com/@j.uuuuudy","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc","video_title":"Every product I finished in 2025","video_date":"2025-12-19"}]},{"tag":"dry_damaged_hair","label":"Dry / damaged hair","group":"concern","polarity":"positive","mention_count":2,"product_count":1,"source_type":"deepseek","sample_quote":"It feels very nourishing to the hair.","provenance":[{"creator_handle":"daceycash","creator_name":"Dacey Cash","channel_url":"https://www.youtube.com/@daceycash","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo","video_title":"Sephora Sale 2026 Holy Grails: My Favorite Products","video_date":"2026-04-10"},{"creator_handle":"j.uuuuudy","creator_name":"JUDY","channel_url":"https://www.youtube.com/@j.uuuuudy","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc","video_title":"Every product I finished in 2025","video_date":"2025-12-19"}]}],"best_for":[],"value":[],"warnings":[]},"creators":[{"handle":"daceycash","display_name":"Dacey Cash","profile_url":"/creators/daceycash","channel_url":"https://www.youtube.com/@daceycash","specialty":["beauty content creator"],"years_active":13,"subscriber_count":517000,"endorsement_strength":"loves it","is_sponsored":false,"video_titles":["Sephora Sale 2026 Holy Grails: My Favorite Products"],"quotes":[{"text":"I truly believe in this product.","timestamp_start":2428.999,"timestamp_end":2430.6850299999996,"timestamp_start_formatted":"40:28","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2428s","sentiment":"positive","topics":["holy grail"],"mentions_variant":null},{"text":"This is a serum that you apply from mid-lengths to ends really saturate those ends.","timestamp_start":2434.6191,"timestamp_end":2438.8296263157895,"timestamp_start_formatted":"40:34","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2434s","sentiment":"positive","topics":["ease of use"],"mentions_variant":null},{"text":"If you have bleached hair specifically, that's who I think the 8-hour magic night serum would be the most standout for.","timestamp_start":2470.819,"timestamp_end":2484.439,"timestamp_start_formatted":"41:10","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2470s","sentiment":"positive","topics":["suitable for all skin types"],"mentions_variant":null},{"text":"You will wake up with the softest hair.","timestamp_start":2507.679,"timestamp_end":2516.8542941176474,"timestamp_start_formatted":"41:47","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2507s","sentiment":"positive","topics":["nourishing"],"mentions_variant":null},{"text":"After consistently using it every single night probably around like week two that's when you'll really start noticing the benefits.","timestamp_start":2520.539,"timestamp_end":2525.319,"timestamp_start_formatted":"42:00","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2520s","sentiment":"positive","topics":["long wear"],"mentions_variant":null},{"text":"I do a few pumps of this really saturate the ends. I almost like over saturate the ends with the serum and then work just like a little bit through mid lengths and then I seal it in with the oil.","timestamp_start":2534.1392,"timestamp_end":2546.019,"timestamp_start_formatted":"42:14","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2534s","sentiment":"positive","topics":["ease of use"],"mentions_variant":null},{"text":"By the time I wake up the two products have absorbed into my hair and it feels so silky and so smooth. It's way less frizzy. It's way more manageable.","timestamp_start":2546.019,"timestamp_end":2557.599,"timestamp_start_formatted":"42:26","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2546s","sentiment":"positive","topics":["absorption","comfort"],"mentions_variant":null},{"text":"If your hair type is not damaged I do not think the eight hour magic night serum is worth it.","timestamp_start":2568.679,"timestamp_end":2574.452913043478,"timestamp_start_formatted":"42:48","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2568s","sentiment":"cautionary","topics":["suitable for all skin types"],"mentions_variant":null},{"text":"My top recommendation it would be the eight hour magic night serum to my fellow damaged hair people.","timestamp_start":2580.359,"timestamp_end":2593.739,"timestamp_start_formatted":"43:00","video_url":"https://www.youtube.com/watch?v=20C8QVxPyvo&t=2580s","sentiment":"positive","topics":["holy grail"],"mentions_variant":null}]},{"handle":"j.uuuuudy","display_name":"JUDY","profile_url":"/creators/j.uuuuudy","channel_url":"https://www.youtube.com/@j.uuuuudy","specialty":["beauty content creator"],"years_active":11,"subscriber_count":212000,"endorsement_strength":"worth trying","is_sponsored":false,"video_titles":["Every product I finished in 2025"],"quotes":[{"text":"I really love the formula on this.","timestamp_start":1492.559,"timestamp_end":1497.279,"timestamp_start_formatted":"24:52","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc&t=1492s","sentiment":"positive","topics":["formula"],"mentions_variant":null},{"text":"It feels like a gel cream. So, it feels very nourishing to the hair.","timestamp_start":1494.559,"timestamp_end":1499.76,"timestamp_start_formatted":"24:54","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc&t=1494s","sentiment":"positive","topics":["nourishing","texture"],"mentions_variant":null},{"text":"I really did feel like I saw a difference.","timestamp_start":1499.76,"timestamp_end":1502.96,"timestamp_start_formatted":"24:59","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc&t=1499s","sentiment":"positive","topics":["effective"],"mentions_variant":null},{"text":"Someone else points it out. So, I started using this and my friend was like, \"Oh, your hair looks so much smoother recently.\"","timestamp_start":1501.52,"timestamp_end":1506.159,"timestamp_start_formatted":"25:01","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc&t=1501s","sentiment":"positive","topics":["visible results","smooth hair"],"mentions_variant":null},{"text":"This one I do like, but it is really expensive.","timestamp_start":1511.2,"timestamp_end":1515.44,"timestamp_start_formatted":"25:11","video_url":"https://www.youtube.com/watch?v=FMjUo2uqxoc&t=1511s","sentiment":"mixed","topics":["price"],"mentions_variant":null}]}],"limitations":["Evidence-tag coverage is creator-dependent. Absence of a skin tone, white-cast, fragrance-free, fungal-acne-safe, or pregnancy-safe tag means not stated, not false.","Evidence is from YouTube creators only — not clinical trials or dermatologist studies."]}}