{"ok":true,"data":{"product":{"brand":"MAC Cosmetics","name":"M·A·CStack Mascara","slug":"mac-cosmetics-m-a-cstack-mascara","product_url":"/products/mac-cosmetics-m-a-cstack-mascara","brand_url":"/brands/mac-cosmetics","subcategory":"mascara","formulation":"liquid","finish":null,"price_tier":"mid_range","enriched_price":"$29.00","enriched_price_usd":29,"retailers":["Amazon","MAC Cosmetics","Sephora","Nordstrom"],"key_ingredients":[],"claims":["volumizing","lengthening","clump-resistant","buildable"],"consensus_summary":null,"gtin":null,"shades":[]},"signal":{"total_mentions":2,"holy_grail_count":0,"loves_it_count":1,"worth_trying_count":0,"mentions_count":0,"mixed_count":0,"not_recommended_count":1,"unsponsored_count":2,"sponsored_count":0},"caveats":{"mixed_evidence":false,"single_creator":false,"no_price_data":false,"has_negative":true,"negative_note":"1 creator did not recommend this product."},"tags":{"claims":[],"attributes":[],"good_for":[],"best_for":[],"value":[],"warnings":[{"tag":"transfer_proof","label":"Transfer-proof","group":"attribute","polarity":"negative","mention_count":1,"product_count":1,"source_type":"llm_tagger","sample_quote":"I prefer the Mac Stack Elevated versus this one. The Mac Stack Elevated does not transfer on me, but this one does.","warning_text":"transfers / smudges","provenance":[{"creator_handle":"clairekookoo","creator_name":"clairekookoo","channel_url":"https://www.youtube.com/@clairekookoo","video_url":"https://www.youtube.com/watch?v=T7ejT75mIzI","video_title":"Grwm in a heat wave with wet hair and new mac blushes","video_date":"2026-05-21"}]}]},"creators":[{"handle":"magdalinejanet","display_name":"Magdaline Janet","profile_url":"/creators/magdalinejanet","channel_url":"https://www.youtube.com/@magdalinejanet","specialty":[],"years_active":null,"subscriber_count":106000,"endorsement_strength":"loves it","is_sponsored":false,"video_titles":["10 more high-end sephora makeup products you actually need (2026) | part 2"],"quotes":[{"text":"This MAC Stack is such a beautiful mascara. It literally you can stack it on your lashes. You don't get clumpy. The formula is very lightweight, but it provides good pigment and volume.","timestamp_start":584,"timestamp_end":590.88,"timestamp_start_formatted":"9:44","video_url":"https://www.youtube.com/watch?v=LmoyfCttJZY&t=584s","sentiment":"positive","topics":["buildable","no clump","lightweight","volume"],"mentions_variant":null},{"text":"I need volume. I need my lashes to kind of look a little thick and this one does it.","timestamp_start":607.08,"timestamp_end":614.0400000000001,"timestamp_start_formatted":"10:07","video_url":"https://www.youtube.com/watch?v=LmoyfCttJZY&t=607s","sentiment":"positive","topics":["volume","thick lashes"],"mentions_variant":null},{"text":"The only caveat about this one is that you need to let it dry because it does remain wet for a good amount of time.","timestamp_start":611.24,"timestamp_end":618.36,"timestamp_start_formatted":"10:11","video_url":"https://www.youtube.com/watch?v=LmoyfCttJZY&t=611s","sentiment":"mixed","topics":["drying time","caveat"],"mentions_variant":null},{"text":"I really like this because I find that a lot of volumizing mascaras tend to get super clumpy and you can look like spidery lashes really, really quick. This one you stack and stack and stack and stack on and it looks beautiful.","timestamp_start":629.64,"timestamp_end":635.08,"timestamp_start_formatted":"10:29","video_url":"https://www.youtube.com/watch?v=LmoyfCttJZY&t=629s","sentiment":"positive","topics":["no clump","buildable","comparison"],"mentions_variant":null}]},{"handle":"clairekookoo","display_name":"clairekookoo","profile_url":"/creators/clairekookoo","channel_url":"https://www.youtube.com/@clairekookoo","specialty":[],"years_active":null,"subscriber_count":6710,"endorsement_strength":"not recommended","is_sponsored":false,"video_titles":["Grwm in a heat wave with wet hair and new mac blushes"],"quotes":[{"text":"I'm going to do a combination for mascara of the Mac Stack regular and the Lancôme Définicils.","timestamp_start":1198.8,"timestamp_end":1205.24,"timestamp_start_formatted":"19:58","video_url":"https://www.youtube.com/watch?v=T7ejT75mIzI&t=1198s","sentiment":"positive","topics":["layering","combination"],"mentions_variant":null},{"text":"The Mac Stack does smudge.","timestamp_start":1216.8,"timestamp_end":1221.3714285714286,"timestamp_start_formatted":"20:16","video_url":"https://www.youtube.com/watch?v=T7ejT75mIzI&t=1216s","sentiment":"negative","topics":["smudging","transfer"],"mentions_variant":null},{"text":"I prefer the Mac Stack Elevated versus this one. The Mac Stack Elevated does not transfer on me, but this one does.","timestamp_start":1265.76,"timestamp_end":1271.28,"timestamp_start_formatted":"21:05","video_url":"https://www.youtube.com/watch?v=T7ejT75mIzI&t=1265s","sentiment":"negative","topics":["smudging","transfer","prefers elevated version"],"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."]}}