The Substance (2025)
The Substance is streaming in Japan on Amazon Prime Video.
The verdict
The Substance is a solid, watchable English film that mostly delivers on what it promises. It carries a 7.1/10 on TMDB across 6,506 ratings — comfortably clear of the pack. It clocks in at a standard 141 minutes. In Japan you can stream it on Amazon Prime Video.
Should you spend 2h 21m on it?
2h 21m of English horror, leaning science fiction. With 6,506 ratings behind it, the number isn't going to move much — you know what you're getting.
Don't watch this if…
- you need something everyone can sit through. Rated R15+
- you're after a gentle scare. It's rated R15+
- Why
- It sits at 7.1/10 across 6,506 ratings: dependable, not remarkable.
- Skip if
- you want to sleep afterwards
- Best for
- A night you can give it your full attention
Story
A fading celebrity decides to use a black market drug, a cell-replicating substance that temporarily creates a younger, better version of herself.
Good to know
| Runtime | 2h 21m |
| Watch with family? | R15+ · Older kids & up |
| Genre | Horror / Science Fiction |
| Language | English |
| Best screen | Stream at home |
Director
Coralie Fargeat
Cast
Where to watch in Japan
Included with a subscription — no extra charge on these platforms.
Availability as of 27 Sept 2026 — platforms may change over time.
More: Everything new on Prime Video
Trailer
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